MBP's right fan little "bzzz" noise

[sweedigel]

Hi,

I recently received my macbookpro from the refurb (the santa rosa's model 2,2ghz...). It's all new but I noticed a little noise coming from the right fan. Not so disturbing but in a quiet environment I can hear it with no difficulty.
Is that a known issue ? I read that the penryn's models had the same problem , but nothing for the old-gen ones.

[RSNL]

i dunno about the older gen..but i just went to the genius bar today and they replaced my macbook pro because it was still under the 14-day..
they are right now transfering all my stuff into the new MBP and can pick it up later after work.