It keeps forgetting the Expose settings , at random. Just using the computer as normal, and i 'squeeze' the side of teh Mighty Mouse. Nothing. I squeeze harder... nothing. I grip it like a crazed baboon with a fake banana -- Nothing. I press F11 in frustration. Nothing. I click the middle mouse button -- No dashboard. WTF? I go to system preferences and look at the Desktop & Expose settings. All the functions have the - in place of the key (or mouse button). So i have to go through and re-map them manually. This has happened twice now. But its not limited to my PowerMac, because it happened at least that amount of times on my previous PowerMac. I have nothing out of the ordinary installed... Photoshop and Limeware (oh and the system updates -- though the last 2.3 didnt have the new build of OSX so i cant blame it on that). Is there some key combination im pressing without realising it that turns off Expose??? It's rather annoying when it happens. EDIT: Oh got my first ever crash in OSX the otherday. Gray Screen of Death. At least it did it with a bit of style lol.