Mike, can you please post the output of "lspci -v" as an attachment to this bug-report. Or tell me what GPU and driver you are using? Your described problem looks very much like a driver-bug with the ati-video- driver for Xorg. Should that be the case you'll be able to work around that, but using the newer acceleration-method EXA, instead of XAA.
For reference - remember I'm just assuming here your machine has an ati GPU and you're victim of this particular bug - see LP: #426582 -- Box appears on desktop after login and reconnection to wireless https://bugs.launchpad.net/bugs/469236 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs