I just updated my system to 10.5.2. After the reboot my dock and my menu bar hung. The Menubar gave me the spinning beachball of death right after login and the dock just didn't react at all after i changed a stack to folder view. I deactivated all 3rd party tools that start up at login. Everything worked again after I quit FontExplorer X (Build 435). If you have the same problems, please drop me a line and write a mail to info@linotype.com UPDATE: Issue is resolved. Linotype released FontExplorer X 1.2.3 which fixes those nasty bugs. Thank you Linotype for reacting so fast!