I have exactly the same issue. The crashes only occur while actively using the computer. I usually have Amarok, Kopete, Firefox running when this happens.
After the crash I see TTY1 but Amarok keeps playing until I stop/restart KDM. I already used the xorg-edgers ppa to see if this helps, but it doesn't. I downgraded again and the issue is still occuring a few times each day. I've attached the Xorg.0.log from after a crash. I use the official ATI catalyst fglrx driver from AMD's webpage with two graphiccards and four screens. fglrx version 8.801 Amarok: 2.3.2 Kubuntu 10.10 I have following ppa's enabled, but no others: deb http://ppa.launchpad.net/kubuntu-ppa/ppa/ubuntu maverick main deb-src http://ppa.launchpad.net/kubuntu-ppa/ppa/ubuntu maverick main ** Attachment added: "Xorg.0.log from after a segfault" https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/689072/+attachment/1804883/+files/Xorg.0.log -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in ubuntu. https://bugs.launchpad.net/bugs/689072 Title: X Crashes randomly with certain applications _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp