The Imac has Office X and Scanwizard 5 installed. Hanging off the Usb is a HP DesignJet 500 and the machine is networked.
The User has used the machine on and off the Network also had only had Vectorworks loaded and still freezes.
I was wondering if it could have anything to do with the graphics card in these Imacs (Nvidia Gforce4 Chipset)