I have had my new 06 Mustang for a week now.
Within the first few days I started to notice that while diving with
the A/C on there is a noticeable sound (like a burst of air) that
occurs every 5 to 15 seconds like clockwork.
This noise is loud enough to hear inside the car with the windows up
and the radio playing at a low level. When standing outside the car the
noise can be heard well over the sound of the engine.

I took it in for service and I was told that the sound was normal, and
was just the A/C cycling. I was also told by the serviceman that this
is a noisy part on a lot of Fords and it is just more noticeable in the
Mustang because of the engine layout.

So my questions are:

1)    Does the serviceman's explanation make sense?
2)    Should the engagement of the A/C make that much noise?
3)    Should the A/C cycle every 5 to 15 seconds? I live in Arizona where
the daily temp still exceeds 90 degress?
4)    Does anyone else with a 05 or 06 mustang hear the same noise every 5
to 15 seconds while driving with the A/C on?
5)    If something needs to be fixed what is the best way to approach the
service center who believes it is not a problem?

I thank anyone that can help in advance.