The symptoms here look like bug 555870. Would people experiencing this please test the updated gnome-screensaver package here: http://people.canonical.com/~chrisccoulson/lp555870/
Note that you will need to restart after installing this package Thanks -- [RS480] black screen after a few user switches https://bugs.launchpad.net/bugs/546578 You received this bug notification because you are a member of Ubuntu-X, which is the registrant for xserver-xorg-driver-ati. _______________________________________________ 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