Comment 74 for bug 805087

This bug just happened on my Ubuntu 11.10
Unity dockbar hiding behind other application windows
The Alt+Tab bar also hiding behind other application windows

apogee@apogee-desktop:~$ uname -a
Linux apogee-desktop 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:50:42 UTC 2011 i686 i686 i386 GNU/Linux

apogee@apogee-desktop:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 11.10
Release: 11.10
Codename: oneiric

In order to get out from this situation, I use this command:
$ unity& disown

then unity restarts and I can see it