Michael A. Peters wrote: > update - it didn't actually bring the OS down, it brought X11 down - What happens if you add the following to Section "Device" in /etc/X11/xorg.conf? Section "Device" Option "AccelMethod" "XAA" Option "XAANoOffscreenPixmaps" "true" EndSection I am using firefox 3.5 from www.mozilla.com without any problems. But without the code above the Xorg process uses 100% cpu on some www sites. In my opinion it is not a firefox but an xorg bug. regards Olaf