Firefox won't start when I click on the icon.
Windows Vista, FF3.5.1. I normally am a laggard when it comes to deploying new stuff, but FF3.1 was hanging, like everyday. So I "upgraded" to FF 3.5.1, and now firefox won't start up. I see the firefox.exe process in Task Manager, but it never shows a UI.
I perused the net and saw a bunch of other people had this problem, going back to FF3.0 days, but the cause is not clear, and there's lots of guessing in all the discussion.
Anyone have a definitive workaround or avoidance for this?
ANSWER: I hadn't rebooted in a month or so, but installed some Windows Updates that required it. After the reboot FF 3.5.1 started up fine.