So anyway brand new iMac and time machine is causing a system wide hang up. The funny thing is that time machine is backing up fine but randomly it is causing Leopard to not allow me to open anything. It is not causing kernel panics but the good old bouncing dock for a few min on end and then nothing. Can't even restart the computer, just sits there and does nothing. Had to hold the power button down for 10 sec or so. I am kind of shocked Leopard is having as much problems as it is. I think Apple needs to get the quality control train back on the tracks.