So I noticed that the new version no longer brings up a quick panel of basic commands when you hit F1, but launches your web browser instead.
So, I tried it.
Mac, 10.5.8. Firefox, 3.6.13. Firefox opens profile manager on startup.
With firefox not running, I asked for help. Firefox started up, let me choose profile, and then restored my previous windows -- all normal.
But no help page!
Try opening a new session, and not recovering your previous sessions.