hmm - mine had similar issues on longer business trip with 4 passengers yesterday. All was working fine and then we noticed no air was coming out - this was about 1 hour in to the drive. Worked fine on the way home for awhile, but again 1 hour or so into the drive the fan was blowing, but not much airflow was coming out of the vents.

Could this be the evap freezing problem? Would the first thing to do is have the AC system recharged?

Seems like a pretty tough thing for a dealer to reproduce since it takes about an hour of driving with the AC for the problem to show up.

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2003 4.6is - SOLD
2003 M5 Imola
2008 Mini Cooper S
2011 Mazda CX9