Riiight, so i've been using my 15GB iPod for the past month+, and all of a sudden, when i connect it to the dock, it opens iTunes, starts updating the songs (about 10x slower than usual), and then completely freezes up the entire system! Even the mouse freezes! I tried restarting both the iMac and the iPod, with no success. I don't know what to do!!! HELP!!!