mine did the same damn thing, a quick "restart" (turning it off, taking the key out, openin the door, starting it back up) fixed it in a jiffy

 

I've had that same problem. Scared the crap out of me when it was completely unresponsive. When it finally turned back on, the volume was set for full blast. Ouch.


Also, what's the deal with the Shaker 500 pausing for 1 second between CD tracks?