Should I update to Firefox 4?

FireFox 4.01 is great, it works perfectly with Adblock plus to block most of the ads I would see. The only thing that I found to block Hulu ads anymore is Admuncher ( a href="http://answers.admuncher.com" rel="nofollow"http://answers.admuncher.com/a ) I have been using it for a long time and it works flawlessly with all browsers.