I have a 2003 W203 and this has never been an issue in our car. We have 42000 on ours. Also a good question is how often do you use your AC? We rarely use ours unless we really are hot, most of the time the windows are down and the roof open! But I have seen this posted on both MBWorld and MBKlasse forums in the past in the W203 section. Seems to be 2001 and 2002 W203's with the issue. I would check the drain lines and the Noise Encapsulation Pans under the car to see if there is any mold on the pans or the drains are clogged. I almost think this was down there, but it could also have been in the evaporator housing as well, I guess they had poor planning on the drains from the evaporator housing. Could be either.

__________________
~Jamie
_________________
2003 Pewter C230K SC C1, C4, C5, C7, heated seats, CD Changer, and 6 Speed. ContiExtremes on the C7's.

1986 190E 2.3 Black, Auto, Mods to come soon.....