Ok so it's very annoying I am in Windows XP SP3 and after about 10 minutes I move the cursor to the bottom right corner and JD icon dissapears,
I closed my antivirus(Nod32) and shut down Firewall and dwonloaded Java from java.com but Jd still crashes
Here is the bug report:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x7c91b1fa, pid=8152, tid=6220
#
# JRE version: 6.0_17-b04
# Java VM: Java HotSpot(TM) Client VM (14.3-b01 mixed mode, sharing windows-x86 )
# Problematic frame:
# C  [ntdll.dll+0x1b1fa]
#
# If you would like to submit a bug report, please visit:
#   **External links are only visible to Support Staff**# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

---------------  T H R E A D  ---------------

Current thread (0x0492f400):  JavaThread "DOwnloadchunk 20885422 - 40684747" [_thread_in_native, id=6220, stack(0x055d0000,0x05620000)]

siginfo: ExceptionCode=0xc0000005, writing address 0x00000010

Registers:
EAX=0x00000000, EBX=0x00000000, ECX=0x00000ac8, EDX=0x033f6ab4
ESP=0x0561ee7c, EBP=0x0561eef0, ESI=0x033f6aa4, EDI=0x00000000
EIP=0x7c91b1fa, EFLAGS=0x00010246

Top of Stack: (sp=0x0561ee7c)
0x0561ee7c:   0343b6f8 00000000 00000000 ffb3b4c0
0x0561ee8c:   ffffffff 00115400 00000000 00000000
0x0561ee9c:   0561ef14 71a557c1 00000be0 00000be4
0x0561eeac:   00000002 71a544a8 0561efa0 0561efac
0x0561eebc:   00000001 0561ef88 00000001 00000000
0x0561eecc:   00000020 00000800 0561ef98 00000000
0x0561eedc:   00002000 00000be0 00000000 00000000
0x0561eeec:   00000ac8 0561ef88 7c901046 003f6aa4 

Instructions: (pc=0x7c91b1fa)
0x7c91b1ea:   8b 46 10 3b c3 89 45 fc 0f 84 9e 00 00 00 8b 06
0x7c91b1fa:   ff 40 10 8b 45 fc 83 e0 01 89 45 e8 8b 06 ff 40 


Stack: [0x055d0000,0x05620000],  sp=0x0561ee7c,  free space=315k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C  [ntdll.dll+0x1b1fa]
C  [ntdll.dll+0x1046]

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
J  java.net.SocketInputStream.socketRead0(Ljava/io/FileDescriptor;[BIII)I
J  java.net.SocketInputStream.read([BII)I
J  java.io.BufferedInputStream.read1([BII)I
J  java.io.BufferedInputStream.read([BII)I
J  sun.net.www.MeteredStream.read([BII)I
J  sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read([BII)I
J  java.nio.channels.Channels$ReadableByteChannelImpl.read(Ljava/nio/ByteBuffer;)I
j  jd.plugins.download.DownloadInterface$Chunk.download()V+467
j  jd.plugins.download.DownloadInterface$Chunk.run0()V+1535
j  jd.plugins.download.DownloadInterface$Chunk.run()V+9
v  ~StubRoutines::call_stub

---------------  P R O C E S S  ---------------

Java Threads: ( => current thread )
  0x0480b400 JavaThread "JD-StartDownloads" [_thread_in_native, id=5600, stack(0x05210000,0x05260000)]
  0x0399b400 JavaThread "DOwnloadchunk 163998268 - -1" [_thread_in_native, id=5736, stack(0x2ccc0000,0x2cd10000)]
  0x03931800 JavaThread "DOwnloadchunk 123016488 - 163839999" [_thread_in_native, id=7900, stack(0x2cc70000,0x2ccc0000)]
  0x0638a400 JavaThread "DOwnloadchunk 82091336 - 122879999" [_thread_in_native, id=7820, stack(0x2cc20000,0x2cc70000)]
  0x0620dc00 JavaThread "DOwnloadchunk 41133178 - 81919999" [_thread_in_native, id=6556, stack(0x2cbd0000,0x2cc20000)]
  0x0628c400 JavaThread "DOwnloadchunk 126595 - 40959999" [_thread_in_native, id=1164, stack(0x2cb80000,0x2cbd0000)]
  0x0480a000 JavaThread "JD-StartDownloads" [_thread_blocked, id=7428, stack(0x05260000,0x052b0000)]
  0x04baa400 JavaThread "DOwnloadchunk 163998344 - -1" [_thread_in_native, id=6180, stack(0x2c710000,0x2c760000)]
  0x02b09000 JavaThread "DOwnloadchunk 123044076 - 163839999" [_thread_in_native, id=5224, stack(0x2c6c0000,0x2c710000)]
  0x04710800 JavaThread "DOwnloadchunk 82191524 - 122879999" [_thread_in_native, id=4332, stack(0x2c670000,0x2c6c0000)]
  0x04718400 JavaThread "DOwnloadchunk 41118463 - 81919999" [_thread_in_native, id=6712, stack(0x2c620000,0x2c670000)]
  0x04b2b400 JavaThread "DOwnloadchunk 303468 - 40959999" [_thread_in_native, id=6708, stack(0x2c5d0000,0x2c620000)]
  0x0480ac00 JavaThread "JD-StartDownloads" [_thread_blocked, id=6192, stack(0x03c80000,0x03cd0000)]
  0x05d17400 JavaThread "DOwnloadchunk 81924160 - -1" [_thread_in_native, id=3740, stack(0x2c8a0000,0x2c8f0000)]
  0x05d96400 JavaThread "DOwnloadchunk 61658742 - 81369495" [_thread_in_native, id=1392, stack(0x2c850000,0x2c8a0000)]
  0x05e94800 JavaThread "DOwnloadchunk 41306204 - 61027121" [_thread_in_native, id=6212, stack(0x2c800000,0x2c850000)]
  0x04828400 JavaThread "DOwnloadchunk 20534038 - 40684747" [_thread_in_native, id=7080, stack(0x2c7b0000,0x2c800000)]
  0x04828000 JavaThread "DOwnloadchunk 477708 - 20342373" [_thread_in_native, id=7572, stack(0x2c760000,0x2c7b0000)]
  0x03771400 JavaThread "DOwnloadchunk 18084908 - -1" [_thread_in_native, id=6584, stack(0x06940000,0x06990000)]
  0x0482c000 JavaThread "DOwnloadchunk 13827219 - 17849683" [_thread_in_native, id=2780, stack(0x068f0000,0x06940000)]
  0x03932400 JavaThread "DOwnloadchunk 9210886 - 13387262" [_thread_in_native, id=5788, stack(0x068a0000,0x068f0000)]
  0x049ae800 JavaThread "DOwnloadchunk 4719425 - 8924841" [_thread_in_native, id=8088, stack(0x04db0000,0x04e00000)]
  0x03767000 JavaThread "DOwnloadchunk 333960 - 4462420" [_thread_in_native, id=7868, stack(0x03cd0000,0x03d20000)]
  0x02b43400 JavaThread "DOwnloadchunk 164789608 - -1" [_thread_in_native, id=5432, stack(0x05850000,0x058a0000)]
  0x02b42000 JavaThread "DOwnloadchunk 123610356 - 163839999" [_thread_in_native, id=5256, stack(0x05800000,0x05850000)]
  0x02b40c00 JavaThread "DOwnloadchunk 82913363 - 122879999" [_thread_in_native, id=3000, stack(0x057b0000,0x05800000)]
  0x04829400 JavaThread "DOwnloadchunk 42056260 - 81919999" [_thread_in_native, id=7972, stack(0x05760000,0x057b0000)]
  0x03761000 JavaThread "DOwnloadchunk 445959 - 40959999" [_thread_in_native, id=7708, stack(0x05710000,0x05760000)]
=>0x0492f400 JavaThread "DOwnloadchunk 20885422 - 40684747" [_thread_in_native, id=6220, stack(0x055d0000,0x05620000)]
  0x03763800 JavaThread "DOwnloadchunk 82043224 - -1" [_thread_in_native, id=2132, stack(0x05530000,0x05580000)]
  0x03762800 JavaThread "DOwnloadchunk 61136022 - 81369495" [_thread_in_native, id=5556, stack(0x054e0000,0x05530000)]
  0x03681400 JavaThread "DOwnloadchunk 41506580 - 61027121" [_thread_in_native, id=5644, stack(0x05490000,0x054e0000)]
  0x03680800 JavaThread "DOwnloadchunk 20637130 - 40684747" [_thread_in_native, id=7960, stack(0x05440000,0x05490000)]
  0x03773000 JavaThread "DOwnloadchunk 919116 - 20342373" [_thread_in_native, id=6608, stack(0x050d0000,0x05120000)]
  0x04821000 JavaThread "JD-StartDownloads" [_thread_blocked, id=7808, stack(0x053f0000,0x05440000)]
  0x0481fc00 JavaThread "JD-StartDownloads" [_thread_blocked, id=8176, stack(0x053a0000,0x053f0000)]
  0x04719000 JavaThread "JD-StartDownloads" [_thread_blocked, id=7592, stack(0x05350000,0x053a0000)]
  0x04809400 JavaThread "JD-StartDownloads" [_thread_blocked, id=7224, stack(0x05300000,0x05350000)]
  0x04822000 JavaThread "JD-StartDownloads" [_thread_blocked, id=3184, stack(0x052b0000,0x05300000)]
  0x04807000 JavaThread "Speedmeter updater" [_thread_blocked, id=6672, stack(0x051c0000,0x05210000)]
  0x04805800 JavaThread "Tray Icon Updater" [_thread_blocked, id=2540, stack(0x05170000,0x051c0000)]
  0x04804c00 JavaThread "DownloadWatchDog" [_thread_blocked, id=3060, stack(0x04ea0000,0x04ef0000)]
  0x0395d400 JavaThread "Swing-Shell" daemon [_thread_blocked, id=4416, stack(0x04f30000,0x04f80000)]
  0x038d4800 JavaThread "LinkGrabberView: infoupdate" [_thread_blocked, id=5560, stack(0x04e50000,0x04ea0000)]
  0x0390e800 JavaThread "DownloadView: infoupdate" [_thread_blocked, id=5360, stack(0x04e00000,0x04e50000)]
  0x037ab000 JavaThread "PremiumStatusUpdateTimer" [_thread_blocked, id=6552, stack(0x04d60000,0x04db0000)]
  0x03967400 JavaThread "ClipboardHandler" [_thread_blocked, id=5020, stack(0x043f0000,0x04440000)]
  0x03961000 JavaThread "AWT-EventQueue-1" [_thread_blocked, id=4572, stack(0x043a0000,0x043f0000)]
  0x03960000 JavaThread "ByteBuffer debugger" [_thread_blocked, id=7872, stack(0x041a0000,0x041f0000)]
  0x03778000 JavaThread "Webinterface" [_thread_in_native, id=7172, stack(0x04350000,0x043a0000)]
  0x03852800 JavaThread "Http-Server Consumer" [_thread_in_native, id=7892, stack(0x04300000,0x04350000)]
  0x03837400 JavaThread "D3D Screen Updater" daemon [_thread_blocked, id=7968, stack(0x04240000,0x04290000)]
  0x003b6400 JavaThread "DestroyJavaVM" [_thread_blocked, id=6720, stack(0x009c0000,0x00a10000)]
  0x03832800 JavaThread "TimerQueue" daemon [_thread_blocked, id=2904, stack(0x041f0000,0x04240000)]
  0x037ae400 JavaThread "SyntheticaCleanerThread" daemon [_thread_blocked, id=7032, stack(0x03d40000,0x03d90000)]
  0x031d7400 JavaThread "AWT-Windows" daemon [_thread_in_native, id=3260, stack(0x03be0000,0x03c30000)]
  0x031d3c00 JavaThread "AWT-Shutdown" [_thread_blocked, id=4920, stack(0x03b90000,0x03be0000)]
  0x031d3400 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=4088, stack(0x03b40000,0x03b90000)]
  0x0317ac00 JavaThread "HSQLDB Timer @10ef90c" daemon [_thread_blocked, id=4340, stack(0x03aa0000,0x03af0000)]
  0x031c6c00 JavaThread "EventSender" [_thread_blocked, id=7160, stack(0x03600000,0x03650000)]
  0x031c5c00 JavaThread "EventSenderWatchDog" [_thread_blocked, id=3312, stack(0x035b0000,0x03600000)]
  0x031c7c00 JavaThread "JUnique/Server/jd.Main" daemon [_thread_in_native, id=6744, stack(0x03560000,0x035b0000)]
  0x02af9c00 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=3144, stack(0x03030000,0x03080000)]
  0x02af3c00 JavaThread "CompilerThread0" daemon [_thread_blocked, id=3424, stack(0x02fe0000,0x03030000)]
  0x02af2400 JavaThread "Attach Listener" daemon [_thread_blocked, id=6856, stack(0x02f90000,0x02fe0000)]
  0x02b00c00 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=8028, stack(0x02f40000,0x02f90000)]
  0x02ab1000 JavaThread "Finalizer" daemon [_thread_blocked, id=6488, stack(0x02ef0000,0x02f40000)]
  0x02aac400 JavaThread "Reference Handler" daemon [_thread_blocked, id=7416, stack(0x02ea0000,0x02ef0000)]

Other Threads:
  0x02aaac00 VMThread [stack: 0x02e50000,0x02ea0000] [id=6324]
  0x02afc000 WatcherThread [stack: 0x03080000,0x030d0000] [id=5404]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
 def new generation   total 2880K, used 2703K [0x069d0000, 0x06ce0000, 0x09130000)
  eden space 2624K,  95% used [0x069d0000, 0x06c42a10, 0x06c60000)
  from space 256K,  76% used [0x06c60000, 0x06c91370, 0x06ca0000)
  to   space 256K,   0% used [0x06ca0000, 0x06ca0000, 0x06ce0000)
 tenured generation   total 34740K, used 27826K [0x09130000, 0x0b31d000, 0x269d0000)
   the space 34740K,  80% used [0x09130000, 0x0ac5c8f8, 0x0ac5ca00, 0x0b31d000)
 compacting perm gen  total 16384K, used 16176K [0x269d0000, 0x279d0000, 0x2a9d0000)
   the space 16384K,  98% used [0x269d0000, 0x2799c0d8, 0x2799c200, 0x279d0000)
    ro space 8192K,  63% used [0x2a9d0000, 0x2aee8b20, 0x2aee8c00, 0x2b1d0000)
    rw space 12288K,  53% used [0x2b1d0000, 0x2b845138, 0x2b845200, 0x2bdd0000)

Dynamic libraries:
0x00400000 - 0x00424000 	C:\Program Files\Java\jre6\bin\javaw.exe
0x7c900000 - 0x7c9af000 	C:\WINDOWS\system32\ntdll.dll
0x7c800000 - 0x7c8f6000 	C:\WINDOWS\system32\kernel32.dll
0x77dd0000 - 0x77e6b000 	C:\WINDOWS\system32\ADVAPI32.dll
0x77e70000 - 0x77f02000 	C:\WINDOWS\system32\RPCRT4.dll
0x77fe0000 - 0x77ff1000 	C:\WINDOWS\system32\Secur32.dll
0x7e410000 - 0x7e4a1000 	C:\WINDOWS\system32\USER32.dll
0x77f10000 - 0x77f59000 	C:\WINDOWS\system32\GDI32.dll
0x629c0000 - 0x629c9000 	C:\WINDOWS\system32\LPK.DLL
0x74d90000 - 0x74dfb000 	C:\WINDOWS\system32\USP10.dll
0x7c340000 - 0x7c396000 	C:\Program Files\Java\jre6\bin\msvcr71.dll
0x6d800000 - 0x6da8b000 	C:\Program Files\Java\jre6\bin\client\jvm.dll
0x76b40000 - 0x76b6d000 	C:\WINDOWS\system32\WINMM.dll
0x6d7b0000 - 0x6d7bc000 	C:\Program Files\Java\jre6\bin\verify.dll
0x6d330000 - 0x6d34f000 	C:\Program Files\Java\jre6\bin\java.dll
0x6d290000 - 0x6d298000 	C:\Program Files\Java\jre6\bin\hpi.dll
0x76bf0000 - 0x76bfb000 	C:\WINDOWS\system32\PSAPI.DLL
0x6d7f0000 - 0x6d7ff000 	C:\Program Files\Java\jre6\bin\zip.dll
0x02cd0000 - 0x02ceb000 	C:\WINDOWS\TEMP\logishrd\LVPrcInj01.dll
0x6d610000 - 0x6d623000 	C:\Program Files\Java\jre6\bin\net.dll
0x71ab0000 - 0x71ac7000 	C:\WINDOWS\system32\WS2_32.dll
0x77c10000 - 0x77c68000 	C:\WINDOWS\system32\msvcrt.dll
0x71aa0000 - 0x71aa8000 	C:\WINDOWS\system32\WS2HELP.dll
0x6d630000 - 0x6d639000 	C:\Program Files\Java\jre6\bin\nio.dll
0x71a50000 - 0x71a8f000 	C:\WINDOWS\System32\mswsock.dll
0x76f20000 - 0x76f47000 	C:\WINDOWS\system32\DNSAPI.dll
0x76fb0000 - 0x76fb8000 	C:\WINDOWS\System32\winrnr.dll
0x76f60000 - 0x76f8c000 	C:\WINDOWS\system32\WLDAP32.dll
0x76fc0000 - 0x76fc6000 	C:\WINDOWS\system32\rasadhlp.dll
0x03370000 - 0x033bb000 	C:\WINDOWS\system32\imon.dll
0x774e0000 - 0x7761d000 	C:\WINDOWS\system32\ole32.dll
0x71ad0000 - 0x71ad9000 	C:\WINDOWS\system32\WSOCK32.dll
0x033d0000 - 0x033dc000 	C:\Program Files\Eset\pr_imon.dll
0x662b0000 - 0x66308000 	C:\WINDOWS\system32\hnetcfg.dll
0x71a90000 - 0x71a98000 	C:\WINDOWS\System32\wshtcpip.dll
0x6d000000 - 0x6d14a000 	C:\Program Files\Java\jre6\bin\awt.dll
0x73000000 - 0x73026000 	C:\WINDOWS\system32\WINSPOOL.DRV
0x76390000 - 0x763ad000 	C:\WINDOWS\system32\IMM32.dll
0x773d0000 - 0x774d3000 	C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83\comctl32.dll
0x77f60000 - 0x77fd6000 	C:\WINDOWS\system32\SHLWAPI.dll
0x5ad70000 - 0x5ada8000 	C:\WINDOWS\system32\uxtheme.dll
0x03a60000 - 0x03a64000 	C:\Program Files\Unlocker\UnlockerHook.dll
0x7c9c0000 - 0x7d1d7000 	C:\WINDOWS\system32\SHELL32.dll
0x74720000 - 0x7476c000 	C:\WINDOWS\system32\MSCTF.dll
0x6d230000 - 0x6d284000 	C:\Program Files\Java\jre6\bin\fontmanager.dll
0x4fdd0000 - 0x4ff76000 	C:\WINDOWS\system32\d3d9.dll
0x03d30000 - 0x03d36000 	C:\WINDOWS\system32\d3d8thk.dll
0x77c00000 - 0x77c08000 	C:\WINDOWS\system32\VERSION.dll
0x6d570000 - 0x6d603000 	C:\Program Files\Java\jre6\bin\mlib_image.dll
0x6d1a0000 - 0x6d1c3000 	C:\Program Files\Java\jre6\bin\dcpr.dll
0x6d790000 - 0x6d798000 	C:\Program Files\Java\jre6\bin\sunmscapi.dll
0x77a80000 - 0x77b15000 	C:\WINDOWS\system32\CRYPT32.dll
0x77b20000 - 0x77b32000 	C:\WINDOWS\system32\MSASN1.dll
0x68000000 - 0x68036000 	C:\WINDOWS\system32\rsaenh.dll
0x769c0000 - 0x76a74000 	C:\WINDOWS\system32\USERENV.dll
0x5b860000 - 0x5b8b5000 	C:\WINDOWS\system32\netapi32.dll
0x77920000 - 0x77a13000 	C:\WINDOWS\system32\SETUPAPI.dll
0x77b40000 - 0x77b62000 	C:\WINDOWS\system32\appHelp.dll
0x76fd0000 - 0x7704f000 	C:\WINDOWS\system32\CLBCATQ.DLL
0x77050000 - 0x77115000 	C:\WINDOWS\system32\COMRes.dll
0x77120000 - 0x771ab000 	C:\WINDOWS\system32\OLEAUT32.dll
0x77a20000 - 0x77a74000 	C:\WINDOWS\System32\cscui.dll
0x76600000 - 0x7661d000 	C:\WINDOWS\System32\CSCDLL.dll

VM Arguments:
jvm_args: -Xmx512m 
java_command: D:\programs\JDownloader\JDownloader.jar
Launcher Type: SUN_STANDARD

Environment Variables:
PATH=C:\Program Files\PHP\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Java\jre6\bin
USERNAME=screen
OS=Windows_NT
PROCESSOR_IDENTIFIER=x86 Family 6 Model 23 Stepping 10, GenuineIntel



---------------  S Y S T E M  ---------------

OS: Windows XP Build 2600 Service Pack 3

CPU:total 2 (2 cores per cpu, 1 threads per core) family 6 model 23 stepping 10, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1

Memory: 4k page, physical 2097151k(1810572k free), swap 4194303k(3908880k free)

vm_info: Java HotSpot(TM) Client VM (14.3-b01) for windows-x86 JRE (1.6.0_17-b04), built on Oct 11 2009 00:52:06 by "java_re" with MS VC++ 7.1

time: Sat Dec 26 11:08:36 2009
elapsed time: 262 seconds

Please help !

Another application is crashing your Java (JRE). Did you try to disable clipboard monitoring?

If that doesn't help you should find out which application is responsible, by not using them concurrently with the JRE.

What is "clipboard monitoring"?
How to disable it?
If I close all my programs expect the JD and JD still crashes so it isnt the fault of another application?

The clipboard monitoring can be disabled by unchecking the clipboard monitoring button. It is positioned next to the arrow buttons in the tool bar.

I would un-install the virus software and see whether it's the cause. You can try to disable the entire Windoze virus, but then nothing will work. LOL

If this doesn't work, un-install your JRE and install another, older version. You can find them here :- hXXp://java.sun.com/products/archive/

Thnak you
I disabled the clipboard monitoring then nod32
and now works!