I've found that using expose via "hot corners" can cause my dock to crash and expose to stick. I can make this happen pretty easily by just popping in and out of the corner fairly rapidly, but in regular use it happens about daily. Dock is hidden, and apple-tab doesn't work, but I can (slowly) shut down apps using Activity Monitor. Shut down does not work. Only way to recover is to force a shutdown. I use the dock with auto hiding, and I haven't tried this with hiding off and expose hot corners on, but I will. When crashed, activity monitor shows Dock as up to 90 percent CPU. Can force quit the dock, but it comes right back and remains stuck. No way to shut down expose that I know of. Anyone else seen this? Any comments? I'm not used to a Mac having this sort of problem! Panther definitely worth it but I would sure like to use the corners with expose.