Squeek when the fan's on

When I have the fans on, there is a squeeky sound that appears to come from around the instrument binnacle. As soon as I turn the fan off the noise stops. It sounds like a squeeky belt or bearing. Is this a common problem and is there a simple fix?
 
you'll need a piece of cheese and a slipper to fix this common issue,dangle the cheese from the interior mirror on some string,wait for a few second then when the mouse pokes its head out of the vent,give him a clip with the slipper!
 
When I have the fans on, there is a squeeky sound that appears to come from around the instrument binnacle. As soon as I turn the fan off the noise stops. It sounds like a squeeky belt or bearing. Is this a common problem and is there a simple fix?

I have the same problem havnt got a clue what it is though! Been like it for ages and forgot about it to be honest!
 
Used to have this on mine and it drove me mad. Like yours N0d, mine seemed to be worse on number 1 when it had been on for a while.