I just did a fresh install of Fedora 15 x86_64 with KDE. KDE is mostly unusable in Fedora 15 while it was fine in Fedora 14 (with nvidia driver). The display seems to freeze for a few seconds every few seconds. Menus take seconds to open. Windows leave garbage on the display when they are moved or re-sized. New windows are often filled with garbage before they are drawn all the way. KDE automatically disables the desktop effects. I installed and switched to fluxbox and everything is snappy. Without all of the KDE decoration firefox went from unusable to normal under fluxbox. I have not installed any software not in Fedora's repository (no nvidia drivers). System details that might be usefull: lenovo S10 Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz 4 GB of DDR3 1067 MHz RAM nVidia Corporation G86 [Quadro NVS 290] nouveau driver is loaded and in /etc/X11/xorg.conf Screen spans two 1600x1200 CRTs -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines