Well, as I mentioned before, I have a Radeon 7500, and have the latest drivers installed in XP, and in Linux am using xfree86 4.3, and DRI.
I get the following errors:
In Windows XP:
AppName: blender.exe AppVer: 0.0.0.0 ModName: atioglxx.dll
ModVer: 18.104.22.16836 Offset: 001baa8e
I thought I could fix the problem by removing .B.blend as described here: http://www.vrotvrot.com/support/showitem.php?faq_id=1354
But apparantly the file doesn't exist in Windows XP...
So..... what I did was renamed atioglxx.dll in /windows/system32 to atioglxx.cop as described here:
And now everything works again!!!