that sounds a bit strange. I have no problem at all with mine. i've had my MP5 for almost 2 years now and never had a skippage problem with the stock CD player, and I live in Australia - ie our roads suck. Even with the Eibach springs, I get no skip.
thanks for the replies. id really like to just keep my stock unit, especially because it shouldnt do this. its strange, because sometimes it will skip when i hit small things like lane markers, and then it wont skip at all over speed bumps. should i give the dealership a call?