I ran CC and lost FireFox 1.0.6 completely, desktop shortcuts and all. Luckily, I did not lose profiles. I reinstalled FF, and all is OK. Now links in emails received by Thunderbird 1.0.5 do not work??? I got a response on a ThunderBird forum. I had to reset FireFox as my default browser. Now links work. Go figure???? Case Closed!