I'm running Microsoft Messenger for Mac 7 on Mac OS X 10.6. Out of a sudden it doesn't remember my Nickname and just shows my e-mail address instead. Everytime I change it and restart the application, it reverts back.
I tried to reinstall Messenger and reinstalling Mac OS X (clean install). I've also tried the beta of Messenger 8, and that version has the same problem. It works fine in other applications like Adium, but I want to use Microsoft Messenger. What could be the cause of the problem?