I checked the FAQ and didn't find anything regarding this so I'm going to toss it out here and see if any other WRX guys had this problem.

My problem is that the player sometimes doesn't shut down when I turn the key off. Usually it does but about 1 out of 7 or 8 times, it will continue playing like the key was never turned off. This just started when I moved the unit to the WRX so I figure it's either an oddity to the car or something screwed up in the installation. The same guys did the installation in my former car so this wasn't their first time doing an Empeg.

Also, before someone FAQs me with the entry about the unit not shutting down with the key off, I assume that is an all the time thing since it's a wiring issue. This isn't an all the time thing.