When I try to download from mediafire ,Jdownloader says "No internet connection" .It works with other hosters like Megaupload etcs.

Log:
------------------------ Thread: 18 -----------------------
18 3/2/10 7:13:11 AM - INFO [java_downloader] -> Start new Download: mediafire.com

------------------------ Thread: 76 -----------------------
76 3/2/10 7:13:11 AM - INFO [java_downloader] -> Start working on Chungking-www.urgrove.com.mkv.003

------------------------ Thread: 18 -----------------------
18 3/2/10 7:13:15 AM - INFO [java_downloader] -> Start new Download: mediafire.com

------------------------ Thread: 77 -----------------------
77 3/2/10 7:13:15 AM - INFO [java_downloader] -> Start working on Chungking-www.urgrove.com.mkv.004

------------------------ Thread: 76 -----------------------
76 3/2/10 7:13:18 AM - WARNING [java_downloader] -> Resumepoint not valid
76 3/2/10 7:13:18 AM - FINER [java_downloader] -> Connect...

------------------------ Thread: 77 -----------------------
77 3/2/10 7:13:19 AM - WARNING [java_downloader] -> Resumepoint not valid
77 3/2/10 7:13:19 AM - FINER [java_downloader] -> Connect...

------------------------ Thread: 76 -----------------------
76 3/2/10 7:13:20 AM - INFO [java_downloader] -> Error (3)
76 3/2/10 7:13:20 AM - WARNING [java_downloader] ->
Error occured- latest: ERROR_TEMPORARILY_UNAVAILABLE
00100000000001000000100000000001 <Statuscode
00000000000000000000000000000001 |TODO
00000000000000000000100000000000 |ERROR_TEMPORARILY_UNAVAILABLE
00000000000001000000000000000000 |PLUGIN_IN_PROGRESS
00100000000000000000000000000000 |PLUGIN_ACTIVE
StatusText: Download
ErrorMessage: No Internet connection?

76 3/2/10 7:13:20 AM - WARNING [java_downloader] -> Error occurred: Temporarily unavailably: PLease wait 300000 ms for a retry

------------------------ Thread: 77 -----------------------
77 3/2/10 7:13:22 AM - INFO [java_downloader] -> Error (3)
77 3/2/10 7:13:22 AM - WARNING [java_downloader] ->
Error occured- latest: ERROR_TEMPORARILY_UNAVAILABLE
00100000000001000000100000000001 <Statuscode
00000000000000000000000000000001 |TODO
00000000000000000000100000000000 |ERROR_TEMPORARILY_UNAVAILABLE
00000000000001000000000000000000 |PLUGIN_IN_PROGRESS
00100000000000000000000000000000 |PLUGIN_ACTIVE
StatusText: Download
ErrorMessage: No Internet connection?

77 3/2/10 7:13:22 AM - WARNING [java_downloader] -> Error occurred: Temporarily unavailably: PLease wait 300000 ms for a retry

My version : 0.9.579

Please fix this issue