Hi, this is my first post here. I have a late 2006 iMac (yes, it's old) that lately will completely freeze up on me and I'll have to do a hard reboot with the power button. When it happens the mouse will still move around, but everything else is completely frozen and no keyboard shortcuts will work. I was thinking it has a hardware problem since it's getting pretty old, but I wanted to see what you guys thought. I'm running 10.6.8 and its the core 2 duo 2 ghz with ATI RadeonX1600 graphics.