With your problem, I'd have suggested
General Vista Support section.

This section is for custom made skins.
What I meant about re-installing all from scratch was that either or both the installations of LW/Java could be corrupt. Online installations do have a % of users ending up with corrupt installations. Offline installing is much more reliable. Also removing previous Java versions, cleaning up registry can be important.
Your problem 'might' also be video card related. Have you checked the video card's advanced settings?
Also check this:
http://www.gnutellaforums.com/genera...ta-issues.html