UBUNTU

Ever encountered this problem when you try to install a new software using synaptic or apt-get getting an error message like this E: Could not get lock /var/cache/apt/archives/lock - open (11: Resource temporarily unavailable) E: Unable to lock the download directory Soln: Issue this command on terminal sudo rm /var/cache/apt/archives/lock then try again

It'll take some time to get the official mozilla release of firefox to appear on the ubuntu repository (some security reasons).... You cant update the firefox from firefox because you cant find the update option in the Help menu If you wanna keep your browser up-to-date with mozilla official release Goto-»Applications-»Accessories-»Terminal -»then type sudo firefox then you'll see update option in the Help menu