The screen corruption you see after clicking login that goes away may be bug #931967. I get that too. Fairly sure it's not going to be related to your mouse cursor corruption.
** Package changed: xserver-xorg-video-intel (Ubuntu) => xserver-xorg- video-ati (Ubuntu) ** Changed in: xserver-xorg-video-ati (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in Ubuntu. https://bugs.launchpad.net/bugs/929960 Title: I switched users and my mouse turned into a translucent box To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/929960/+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