Three emails so far - I guess this problem isn't too widespread!

Nonetheless, people are working very hard here to diagnose the problem (which doesn't appear to be related to the vehicle make and model) and come up with a fix or work around. We don't think it's a design problem with the empeg, rather, we think some vehicles are doing very strange things with their power lines. Other stereos may not be affected by this problem as other stereos tend to just switch off in a rather binary way. The car player does a number of groovey things at that stage, mostly behind the scenes.

Rob