ghost in my A4q's climate control

[Reiner Fink <reinerf@microsoft.com>]

I think that there is a cold ghost living in my A4q's climate control.
Since the "auto" setting cranks the fan up to rediculous speeds (and
generates so much noise that you think you were in a hurricane), I
nearly always set the fan speed manually. But lately, I'll set it to a
certain speed, and then the car decides that it needs to be higher than
that! Here is a typical senario:

Cold morning, get in, start the car set the temp to 72deg, set fan speed
to 3 "clicks". Start driving. Drive for 2 minutes, and begin to
accelerate up a hill. As I accelerate, the fan speed starts increasing
as well! Over a period of 15 seconds, it goes: four clicks, five clicks,
six, seven.... what the?? So I reach down and click  "-" button _once_
to lower the fan speed, and it drops from wherever it is all the way
back down to the original 3 clicks. Hmmm.

I have seen this at least 6 times now, and I _swear_ that it is on
manual. The increase in fan speed seems to be tied to strong throttle,
but not always (happened once just idiling at a stoplight). Anyone with
similar experiences? Im due for my 7.5k oil change and I am definately
going to have my dealer look into this, but it would be nice to tell him
exactly what to do to fix it. ;-)

 -reiner