What ubuntu version are you running? Find this by issuing 'dpkg -l mozilla-browser|grep ^ii' (without the quotes) at a command prompt. If that fails, try 'dpkg -l mozilla-firefox|grep ^ii' and post the output here.
What ubuntu version are you running? Find this by issuing 'dpkg -l mozilla- browser| grep ^ii' (without the quotes) at a command prompt. If that fails, try 'dpkg -l mozilla- firefox| grep ^ii' and post the output here.