I've updated to Ubuntu 13.04 but I'm having some issues. First I've updated it trough software updater, then this bug appeared so I did clean install, purging root and home partitions too.
So the bug is this: http://screencloud.net/v/gubP
When I login, the background doesn't refresh and stuck on login screen. Anyway, Unity is fully usable, except super button, alt button and context menu does not work on desktop, but in all applications + on desktop if mouse is hovering launcher or top panel.
I've tried to change the wallpaper using "system settings", no success, even the little thick in bottom does not move.
Thanks in advance.