I have a 160GB iPod Classic attached through the stock iPod connector. Haven't had this working for long, but have noticed something that is really annoying.

About every 3rd or 4th track I skip, the volume raises, not lowers when I make the change. The issue is the increase is enough to damage speakers if I'm not careful.

Anyone else ever experience this?

 

Try to find another one iPod connector and check.
I mean the wiring connector