am using from days ago the last version of J.D. in a CPUx2 computer with Windows Vista Ultimate 64bit SP2, and after returnig to session from stand-by (only monitor off) the downloader is sistematically blocked. When closing J.D. with task manager the warning always shown is "JAVA (TM) plataform SE binary does not respond".
¿Where is the problem, please?

Don't extract the jD folder in a program files folder. Put it in c:\yourfolder or on another disk partition.

Your firewall might block jD. You need to allow javaw.exe, java.exe and jdownloader.exe.

Also kill the existing java process related to jD before you start it again.

You are right, I had only allowed the java.exe in the firewall exceptions, presuming that Jdownloader do it automatically. With your directions, the problem is now fixed. Thanks