In my ms3, I have the same problem. Its a design flaw. I have had it in for warranty work and theyve stripped out the passenger side twice... blown out the drain and it still forms and drips condensation when the air is on high and its not in recirc. In recirc, it doesnt drip.
The service department is at a loss. They "officially" told me the solution is to keep the air in recirc. And in so many words they told me to "deal with it". Because they have been cool about everything else, I told them Id live with it, until a greater problem arises or the carpet starts stinking or something. If that happens they told me to bring it immediately in and theyd replace everything then.
This is like the fourth time Ive seen posts addressing this problem.... I dont think every car has this problem, but enough do that its more than just a single anomaly. It is NOT a clogged hose. I personally watched them blow out the hoses and the problem was not fixed.
