I've noticed firefox won't open on my laptop (ubuntu 10.4) and I've downloaded via pen drive from a windows computer, the file firefox-19.02.tar.bz2. That is as far as I've got. I don't know how to go about installing from the pen drive.
Please assume I'm a novice and know very little about ubuntu and linux but have had 20 years experience in mainstream computing - mainly microsoft.
Thank you for your help in advance!
ETA, apparently I've got a broken update manager and synaptic package manager...