Generally I am quite happy with Ubuntu Linux, but there are some annoyances. One is that the official Ubuntu repositories are not keeping up with the major releases from Mozilla (why?). I was running Firefox 3.6.20 on this box using Ubuntu 10.10 (Maverick Meerkat) while Mozilla is now at Firefox 6.0. Fortunately the fix is very simple:
sudo apt-add-repository ppa:mozillateam/firefox-stable
sudo apt-get update
sudo apt-get install firefox
So I am now running 6.0. Since I have added the repository I should now be able to stay current without any special effort.