How did the newer kernel pan out? If it still crashes, might try upgrading the ddx -intel driver too. A packaged version for lucid is available in the x-updates ppa:
https://launchpad.net/~ubuntu-x-swat/+archive/x-updates?field.series_filter=lucid ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/743496 Title: [gm45] Xorg crashes after 2-3 days of computer uptime To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/743496/+subscriptions _______________________________________________ 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