KDE 4.1 Release Candidate Now AvailableJul 18, 2008, 21:00 (0 Talkback[s])
(Other stories by Rodney Gedda)
[ Thanks to An Anonymous Reader for this link. ]
"A known bug is some users might be experiencing performance problems with NVidia graphics chips and the proprietary drivers. The problem affects window switching and resizing. The KDE project has alerted NVidia to the problems, but no fixed NVidia driver has been released."