[ubuntu] Gnome-shell 3.6.1 extremely buggy Ubuntu 12.10

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http://ubuntuforums.org – I've been a good fan of gnome-shell for a long time. I've been using it since it came around not long ago and I just love the extensions, themes, and speed of it. Ever since I upgraded though, its pretty buggy. First, when I enable user themes, and I press super key to show open windows, the shell crashes. Second, all my extensions disable every time I log in (I've updated the ones that are available on extensions.gnome.org) Also, when I get system notifications, those new ones in shell v 3.6.1, it just pops up right in the center of the screen, except instead of the notification, its jus (Hardware)