I recently installed Thunderbird 3.1 from some source that wasn't the ubuntu repos. I can't remember right now where I got it from (I think it was packaged as a deb), but I'm having a problem when it tries to auto-update.
Unlike the versions that manage their updates via the repos, this one is supposed to update itself whenever it needs to, which seemed fine, but whenever it tries, it pops up an error:
A recommended security and stability update is available, but you do not have the system permissions required to install it. Please contact your system administrator, or try again from an account that has permission to install software on this computer. You can always get the latest version of Thunderbird at: http://mozillamessaging.com/en-US/thunderbird
Is there a way to give TB the permissions it needs short of opening it as root?