I've noticed the same thing, but I thought it was designed that way? (I'm pretty sure I read something in the FAQ about people wanting to set up wireless ethernet with their Empeg Car so they could copy new songs down to it from the house while the car and player were out in the driveway/garage. It pointed out that the timeout before the player shuts off would need to be modified, because otherwise, you'd only have a short time to copy your files to it once the car was turned off.)

I just got my unit installed 2 days ago though, so I'm really not sure how it's "supposed to work" yet.