Can all you 2009 users please try this to see if it is a bug.
All our pcs crash if we do 3dorbit with any SOLID type hatch patterns present in the drawing.
P.S dont forget to save your work first!
its a new pc with a nvidia quadro fx1700, latest driver etc, and the other pc's have a normal desktop g/card. it does orbit if you create a new drawing, then put a sloid hatch in. But if we take any of the architects backgrounds that have solid fill hatch patterns, the only way to orbit is to either delete them, or assign them a different pattern, then orbit is as it should be...