I have the same problem as Jason. Sometimes after starting (GDM) or restarting (ALT-F2 r) gnome-shell, my desktop appears but is unresponsive to mouse clicks.
I managed to create a screenshot [1]. Notice that my user's name is not displayed on the top right of the screen, and the network indicator shows disconnected state. When gnome-shell starts up properly, my user's name is displayed and network indicator shows connected state. When gnome-shell is unresponsive I can switch to the console using CTRL+ALT+F1, login as the same user and restart gnome-shell with the following command: killall -9 gnome-shell. Gnome-Shell will restart and everything works fine afterwards. I have installed Debian Wheezy for a couple of weeks on my personal desktop, personal laptop and business laptop, and the same issue occurs on all three systems. [1] http://www.sdlw.nl/files/gnome-shell-startup.png -- Sander de Leeuw
