For the last few weeks, I have been experiencing a truly inordinate number of browser crashes. Each time a screen appears asking whether to start a new session or return to the previous session. I have downloaded the new version, so I would doubt some conflict between old and new. I do note, however, that on my daughter's mac there is the large "3" on the FireFox opening page whereas on mine, also a mac, the older format remains. Has anyone else also been having crashes?