Attached is an example of the sort of thing I see while holding alt-tab. Note that the textual contents just below the alt-tab bar were not on the screen prior to the keypress, they are old stale contents.
** Attachment added: "BROKEN2.png" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/925936/+attachment/2709639/+files/BROKEN2.png -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/925936 Title: screen corruption on alt-tab in unity To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/925936/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : [email protected] Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp

