hello, there is a quiet noise coming from the top right of my iMac, and i have diagnosed it as the C3 idle noise problem. This is the second iMac (after getting the first one replaced) to have this issue. Specs are: i7 QC 650M 16GB RAM Fusion Drive now i would go ahead and get it replaced again, but it is pretty quiet and the replacement would probably have the same issue anyway... so i'm just wondering if there are any imacs out there that don't have this noise? (at all)... i'm also wondering if it is any indication of a problem with my processor (i.e its breaking... or something?). thanks in advance!