I see lots of posts regarding the "Skipper" (500) and the '05 model. Mine is in an '06 GT vert. But I've got the MP3 blues. My symptoms are the "Bad Disk" from MP3's I've burned. Keep loading until it works. Once it agrees that it is a good disk, it will play until I change disks. I have the occasional disk that won't register as an MP3 but as a CD and plays a loud buzzing sound. Ripped the music at 96kbps (good enough for these old ears). Most of the disks I have burned have been with MusicMatch although I tried Roxio and the MS Media burner with the same results. No skipping problems, thankfully. Had the head changed out once. Anyone else with an '06 having Shaker probs? I've tried a couple of different brands of disks. They all seem to play on other MP3 players, so I think I'm burning good disks. Any solutions other than "rebooting" the unit (seems to help only temporarily), taking it to the dealer for another replacement or an aftermarket unit. Other than that - I'm lovin it, even the bride says it almost makes me look cool.