There seems to be a recurring bug in the PB wherein you'll see a message which reads:
The System has detected a minor problem and corrected it - some of your preferences may be lost
Once you've seen this message once, you may see it over and over and over again. On the MacNN forums, "absmiths" found a solution to the problem. Do the following from a terminal to eliminate the message:
cd ~/Library/PreferencesIf you now logout/login, the error message should have vanished.
su root
rm com.apple.finder.plist
Mac OS X Hints
http://hints.macworld.com/article.php?story=2000121223462667