I seem to be having a problem that has been posted a couple times before on these forums without solution. The problem is that for whatever reason, all the mouseovers in the OS (titlebar buttons, dock labels, and menu items) are completely dead and unresponsive to mouse movement unless I click on them! Also, whenever I start a program, instead of coming to the front it just sits behind all other windows, and starting a screensaver or expose via throwing my cursor into the corner doesn't work. My computer: 2Ghz 20" iMac G5 2GB RAM Logitech MX1000 Mouse (if it matters, doubt it does) Two-month-old Leopard 10.5.1 fresh install What's strange about this is the fact that I had this happen in the past on Tiger a year or so ago and after a few reboots it just seemed to fix itself, not rearing its ugly head again until now... EDIT: Oh yes, almost forgot to mention... I've already tried the usuals (zapping the PRAM, checking permissions, etc.) to no avail.