Hello all, I have a mac mini (meaning no noise at all) and i 'd like to switch to a mac pro Quad core 2.9ghz. I would like to know if there are some configurations (graphic board, fan, etc..) that makes the mac pro TOTALLY quiet when doing some basic works (surfing, reading mail, listening itunes..). If not, can you please give me your feedback about the noise generated by the Mac Pro Nehalem? I am very sensible to this point so i really like to have comments about how silencious it can be (e.g. as quiet as a butterfly ) Thanks in advance.