The discussion boards lit up almost immediately this evening with word that 10.5.2 and Linotype Font Explorer (which has quickly become a challenger for the industry standard font-management app) do not play nice together. It appears that FX makes other apps and the dock hang until you force-quit the font manager.
Discussions:
http://www.fontexplorerx-board.com/viewtopic.php?p=1364
http://discussions.apple.com/thread.jspa?messageID=6573040
So if, like me, you use Font Explorer every day, and are in the middle of some mission-critical projects, now would not be the time to update Leopard.
We'll keep you posted. We got nothing else to do
