I believe I may have the same issue, in Oneiric. When the mouse stops working, I can still use my Wacom tablet pen to move the cursor, but the touchpad is non-responsive. Keyboard functions just fine.
** Changed in: xorg-server (Ubuntu) Status: Expired => New -- 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/816580 Title: Mouse freezes after screensaver lock To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/816580/+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