One I noticed at the weekend, on 2.0final (I'm waiting for a more stable alpha)
Use "Power off at end of track", then insert or enqueue a track. The player powers off (to standby) as soon as the track is added to the running order. I don't think it should.
030103016 (80GB Mk2a, blue)
030102806 (0GB Mk2a, blue)