Re: Why can't I get my Yahoo mail to work on my recently upgraded Mozilla on my Mac OS X 10.7.4?
I'm having the same problem with Firefox-18 on my 10.4.7 system. In addition, the issue also occurs with SeaMonkey 2.15 which makes me think it isn't a problem with my FF history, etc. Regardless, I followed the "clean-up" instructions per the link above and they didn't help. The extensions I have installed are:
Adblock Plus 2.2.1
BarTab Lite 1.2
Ghostery 2.8.4 (only ScoreCard Research Beacon was found and blocked)
Noscript 18.104.22.168 (No scripts are blocked)
Session Manager 0.7.9.4
NOTE that the same problem doesn't occur on FF-18 on my Windows-10 box (and all my Mozilla browsers are running at least Adblock, Ghostery, LastPass, and Noscript).