Kwin becomes CPU hungry when using OpenGL rendered effects in KDE 4.1.
This doesn't happend when using Xrender.
Using Xorg 7.4 dev in Fedora 9 with KDE 4.1.0
Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.