Comment 18 for bug 995699

Slight fix because this problem carries to 12.10,
this is a problem with the composite manager used by gnome 3 and unity 3d
im using 12.10 gnome remix and the way i workaround this without logging is to use metacity to manage my windows
and gtk to decorate them it then allows me to work the menu, the problem lies within compiz and the composite manager when i get time ill look into it more...

side note: if you use cairo just disabling the composite manager on the dock doesnt work you have to fire up your fusion icon and switch the window decorator as well.