Check to make SURE they aren;t populating all 4 slots with 512meg dimms.. those are much cheaper then 1gig or 2 gig dimms, and I'll be they are using all 4 slots. Also see if you can find out how much ram each slot can address. Some can only address 1 gig, and that will limit you to 4 gig max.

Way too many people take way too many things way too seriously.