The plugin appears to not login as a premium user, only recognizing a free account; and downloads error indicates: Plugin out of date. Here's the latest info:
Log:
http://jdownloader.org/pastebin/77850
Example links: **External links are only visible to Support Staff****External links are only visible to Support Staff**
Configuration:
Windows Vista (SP2 Build 6002)
Java Ver 6.0.310
JD Ver 0.9.581
FileFactory Plugin Ver 16183
Norton Antivirus Ver 19.6.1.8
Hope this helps with solving the problem.