Ok thanks for letting us know! A new version of the driver is in Feisty now, thus marking this as fixed.
** Changed in: xserver-xorg-video-mga (Ubuntu) Status: Unconfirmed => Fix Released -- [edgy regression] random X server crashes https://launchpad.net/bugs/74479 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs