Check my post # 2 from another thread.
Its very inconvenient during the repair phase. My car was in the dealer for at least 3 weeks. But my mold/mildew was also the worst they had ever seen.
As for the smell from the AC unit, thats two separate issues and areas in question. Steviej covered it with regards to the smell coming from the ac, and the link above covers the drain issue. BOTH have the same smells. Its mildew/mold that you're smelling.
While the TSB I had done took care of the wet carpet, the smell from the ac is still there. Haven't smelled it recently because of the weather and lack of AC use, but i'm sure once I run the ac again it will come back. I'll probably take care of it next summer.