I woke up my mac today from sleep and noticed my usb wireless mouse wasnt working. then i tried to eject my blue ray player and it would not eject. the hard drive however was still humming along. so for some reason 2 out of my 4 usb ports stopped working after sleep. rebooting fixed it so i dont know if its a fluke thing or what. its the first time in three weeks that it has happened since i got it. very strange.