[ubuntu] Gnome Shell Extensions problem

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http://ubuntuforums.org – Hi All I am following this tutorial on installing a different gnome theme: http://maketecheasier.com/install-cu...mes/2011/09/27 And I have followed it step by step, but when I try to install the gnome-shell-extensions I get this: Code: dan@dan-desktop:~$ sudo apt-get install gnome-shell-extensions [sudo] password for dan: Reading package lists... Done Building dependency tree      Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distrib (Hardware)