Comment 64 for bug 565981

alex you should open a new bug report (even if you believe that it is the patch mentioned here that caused your problem).
Open a console and type this:
ubuntu-bug xserver-xorg

There are certain attachments you should send when reporting problems like this (this list is taken form http://fedoraproject.org/wiki/Xorg/Debugging):

    * All of the X server log file(s): /var/log/Xorg.*.log
    * If you use a xorg.conf, please include it in the bug report, otherwise, please specify in the bug report that it does not exist. Usually this would be located at /etc/X11/xorg.conf, but see the xorg.conf manpage - man xorg.conf - for other standard locations.
    * /var/log/Xorg.0.log from a trial run where you move your xorg.conf aside and let Xorg autodetect your hardware (if you have such a file).
    * /var/log/dmesg (please add drm.debug=15 as boot parameter and reboot) especially in case of crashes and using KMS.
    * content of /var/log/gdm/ only in cases there is nothing interesting in /var/log/Xorg.*.log and dmesg output

but I believe that the command above will do that for you automatically.

You can also give some additional information like if you noticed that the crashes happen when you use certain applications. I hope this information will be of any use to you.