I have received my new iMac 2009 (model) 2.06 4Gb, Nvidia 130GT on Friday. Since then I have applied all the software updates and copied across my files. The problem is the system has locked up twice since then. All applications freeze (including Finder) but the mouse still works (spinning wheel ) the only thing that I can do it hard reset the computer by the power switch. Both times I was using VisualHub and a wetern digital USB HD but I don't supect this to be the issue as I have had no previous problems with these item on my old mac. Has anyone else experienced this issue? Should I contact apple and see what they have to say?