Fedora 12 Gnome-Desktop since last update very slow

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Hello to the list, since the last update - look at the protocol at the end of the mail - Fedora 12 Gnome-Desktop is very slow. Every action takes seconds before it is executed: (*) Opening a terminal window: 2 sec (*) In the terminal: su root and checking the password: three seconds (*) In the same terminal: ls /sbin: first nothing happens, then it scrolls the content of the directory line for line (*) Opening Thunderbird: 5 seconds a clear window, then a part of (*) (*) Thunderbird after 4 seconds the rest (*) scrolling in every application very slow (*) Starting of Compiz failed (*) Moving a window: the content of the window which is under that is restored line by line Are there any problems with Xorg? Before this update, everything was very fast! Thanks for your answers Here the protocol: Mar 07 11:43:29 Updated: xorg-x11-server-common-1.7.5-5.fc12.i686 Mar 07 11:43:30 Installed: xorg-x11-drv-ati-firmware-6.13.0-0.21.20100219gite68d3a389.fc12.i686 Mar 07 11:43:32 Updated: kernel-firmware-2.6.32.9-67.fc12.noarch Mar 07 11:43:38 Updated: kernel-headers-2.6.32.9-67.fc12.i686 Mar 07 11:43:39 Updated: pulseaudio-gdm-hooks-0.9.21-5.fc12.i686 Mar 07 11:43:43 Updated: sos-1.9-1.fc12.noarch Mar 07 11:43:44 Updated: perf-2.6.32.9-67.fc12.noarch Mar 07 11:43:48 Updated: pulseaudio-libs-0.9.21-5.fc12.i686 Mar 07 11:43:51 Updated: GConf2-2.28.0-4.fc12.1.i686 Mar 07 11:44:43 Installed: kernel-2.6.32.9-67.fc12.i686 Mar 07 11:44:45 Updated: pulseaudio-0.9.21-5.fc12.i686 Mar 07 11:44:47 Updated: pulseaudio-utils-0.9.21-5.fc12.i686 Mar 07 11:44:48 Updated: file-libs-5.03-13.fc12.i686 Mar 07 11:44:51 Updated: xorg-x11-server-Xorg-1.7.5-5.fc12.i686 Mar 07 11:44:52 Updated: pulseaudio-module-zeroconf-0.9.21-5.fc12.i686 Mar 07 11:44:53 Updated: pulseaudio-module-bluetooth-0.9.21-5.fc12.i686 Mar 07 11:44:54 Updated: pulseaudio-libs-glib2-0.9.21-5.fc12.i686 Mar 07 11:44:55 Updated: pulseaudio-libs-zeroconf-0.9.21-5.fc12.i686 Mar 07 11:44:57 Updated: gmime22-2.2.25-1.fc12.i686 Mar 07 11:45:00 Updated: usermode-1.104-1.fc12.i686 Mar 07 11:45:01 Updated: libmms-0.5-1.fc12.i686 Mar 07 11:45:02 Updated: GConf2-gtk-2.28.0-4.fc12.1.i686 Mar 07 11:45:03 Updated: usermode-gtk-1.104-1.fc12.i686 Mar 07 11:45:05 Updated: pulseaudio-module-x11-0.9.21-5.fc12.i686 Mar 07 11:45:06 Updated: pulseaudio-module-gconf-0.9.21-5.fc12.i686 Mar 07 11:45:07 Updated: GConf2-devel-2.28.0-4.fc12.1.i686 Mar 07 11:45:10 Updated: mlocate-0.22.2-2.fc12.i686 Mar 07 11:45:11 Updated: info-4.13a-9.fc12.i686 Mar 07 11:45:13 Updated: xorg-x11-server-Xnest-1.7.5-5.fc12.i686 Mar 07 11:45:13 Updated: pulseaudio-esound-compat-0.9.21-5.fc12.i686 Mar 07 11:45:15 Updated: sudo-1.7.2p5-1.fc12.i686 Mar 07 11:45:17 Updated: xorg-x11-drv-ati-6.13.0-0.21.20100219gite68d3a389.fc12.i686 Mar 07 11:45:18 Updated: file-5.03-13.fc12.i686 My Hardware: IBM/Lenovo Thinkpad T43, ATI Radeon X300 (RV370) 5B60 (PCIE) with RADEON: Driver for ATI Radeon chipsets XOrg: X.Org X Server 1.7.5 Release Date: 2010-02-16 X Protocol Version 11, Revision 0 Build Operating System: x86-05 2.6.18-164.6.1.el5 Current Operating System: Linux t43.juergendankoweit.net 2.6.32.9-67.fc12.i686 #1 SMP Sat Feb 27 10:00:02 UTC 2010 i686 Kernel command line: ro root=UUID=27547ae9-3737-4bd1-b859-0ebf6beb461f noiswmd LANG=de_DE.UTF-8 SYSFONT=latarcyrheb-sun16 KE Build Date: 24 February 2010 09:15:30PM Build ID: xorg-x11-server 1.7.5-5.fc12