Hi cotwold, mine isn't noisy at all, for a second I thought it was until I turned my sub-woofer off and that cut some of the humming. I can't hear the buzzing from the monitor unless I attach my head beside/behind it, other than that I can't notice the noise at all.
Since you mentioned you have an ATi card I have a small question 🙂
I have a Sapphire 9700NP, and I installed the drivers from the CD it came with, now I want to install the latest catalyst and control panel, I have to uninstall the old ones right? Do I unistall them by display > settings > advanced > adapter > properties > driver > uninstall? or is there another way to do this?