I have an iMac G5 2.0 with ALS (model before i-Sight), and it's been very loud lately. Even if I don't have any programs open the fans are going at full force and there is like a humming/buzzing sound. I just had all the 3 fans replaced, and it made no difference. I can be sitting upstairs, and I can hear my iMac going downstairs, it's to the point where I don't even like using it. I am going to try hooking it up with just the keyboard and mouse, and unplug my other devices, but I don't think it will make a difference. It runs at about 60-70 degrees which I think it normal for the G5's... Any suggestions?