I'm getting the new iMac, when it's released and was wondering how hot do they get? I currently have a G5 Tower and last summer (here in Australia) it would scream as the temp rose, and become annoying. Just wondering how hot does the iMac 27" get. I don't have air-con but I'm considering it, if I can afford it. Even if it's a small unit just to cool down part of the house.