I also have the same problem but with my 700bt. It seems to come and go though so when I unplug the ipod, wait a few secs, and plug it back in, it seems normal again. Sometimes it'll stay "fixed" for a few days, sometimes a few minutes. I'm using an ipod video (5th gen) and the pioneer cable. It's pretty annoying, but I haven't been able to find a permanent solution.