I'm running Ubuntu 10.04 LTS with Thunderbird 3.1.20. When I log on Iget a notice that Thunderbird 3.1.20 won't be supported after 24 Apr2012. Update Manager isn't updating Thunderbird. What is the bestmeans of updating Thunderbird?
You could either upgrade to the next LTS (12.04) when in comes out or ifyou want to stick with 10.04 then you could enable the backports in therepositories which should provide you with a more recent TB.
First back up your data then in a command line terminal:> sudo add-apt-repository ppa:mozillateam/thunderbird-stable> sudo apt-get update> sudo apt-get upgradeThat should allow you to upgrade to the latest version of Thunderbird.