Try this. Can you connect your iPod through AUX and see if your stability gets better. Before I got my software update to 20.0000.07 my system was completely unstable. Since I was updated I've yet to see an issue for several weeks. One difference is I'm using my zune through AUX for audio. It just works, no more hiccups, no lag connecting my phone, no input selection issues. Etc. I'm wondering how much of these problems are related to using a iDevice on USB.