Short burst of fan noises after sleep?

Does anyone else experience this and is it normal?
I have a brand new Dual 3GHz Mac Pro. When I wake it from sleep (after a few seconds or a few hours, makes no difference), there is a sudden short (about 1 to 2 seconds) burst of fan noise, kind of like a short rev, then when monitor kicks in computer goes to almost silent again, part from a slight hum.
Does this sound normal, can Mac Pro users quickly sleep and then unsleep your computer and tell me if you expreience this?

The fans are controlled by routines in the operating system that monitor all the temperature sensors. These routines also send periodic signals to the control circuitry saying everything is under control. In the absence of these periodic signals (e.g. the temperature routines aren't running yet because the boot procedure isn't complete, or the system has frozen), the circuitry switches all the fans to full speed, to be on the safe side, and prevent overheating. This will happen when power it turned on, or the system has just woken up. It may also happen when running hardware tests, when certain parts must be tested at full speed without interruption.

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Hello Marlena
On Qosmio forum you can find few similar topics with few interesting comments. On of http://forums.computers.toshiba-europe.com/forums/thread.jspa?threadID=10944&messageID=42103
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Is it normal to get fan noise after 5 minutes of use?

Each time I use my Mc=b Air, fan noise starts within few minutes of use while office temperature remains cool.

It is not normal.
Fan
The computer's fans run at high speed although the computer is not experiencing heavy usage and is properly ventilated.
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Best.

Short burst of fan noises after sleep?

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