After a delay of one day, Firefox 0.9 is finally out!
It looks almost the same as Firefox 0.9 RC, but at the first time starting Firefox, it will ask you which browser's setting to import (you can choose NOT to import any settings), which I think is very nice (as I don't want to import my IE settings).
Again, Launchy 2.7.0 didn't work very nicely with Firefox 0.9. I installed this extension several times to get it works. I need to went to Firefox's safe mode several times to remove this extensions because it screwed up Firefox. Now it still have a minor bug: icon of Launchy not displayed in extension manager.
P.S. A minor problem: a friend of mine (not the one in this mozillaZine forum thread) found that the user agent string is