Vidalia in TBB gives no hint that there's a browser window coming
In TBB, Vidalia will launch a browser once Tor is done bootstrapping. But while Tor is bootstrapping, the user has no hint that there might be a browser later.
One option would be for Vidalia to try to say that somewhere in its control panel interface.
Another option would be to launch the browser immediately (though perhaps after #3077 (closed) is done), and have it go to some local html page that explains what's going on, and then have Torbutton or something refresh the page once Tor tells Vidalia that Tor is ready. (If we go with this option, maybe this ticket shouldn't be in the Vidalia category.)