While using Firefox on Ubuntu, I frequently run into warnings from various sites (recent examples: when checking gmail, www.hitrecord.org), that inform me that I am using an outdated/unsupported version of Firefox. I also read somewhere ( I can't remember where ), that Mozilla no longer provides updates for Firefox on Linux, and indeed, there doesn't seem to be any way to update Firefox on Ubuntu. I have tried the most official looking ppa I could find, and that just never seems to have any activity. Also, there is no 'in-browser' option to update, like on Windows. So my question is, is there truly no way to update Firefox on Linux? I am assuming the answer is no for now. I also have to wonder, if this is indeed the case, why?! I also note that there is no warning to this effect on Mozilla's download page for Firefox on Linux, which seems off.