What are you doing when the screen freezes?
--------- Typically I've been in any number of 2D commands, copying, deleting, polygon, without any discernable pattern
Do you have other programs running?
It has varied - I've had Outlook, Excel, Internet browser - cant say for sure if any have been running everytime I've crashed - also at times a media player.
How large is the file you are working on?
Varies - from 4 to 8 mb
How long do you let VW sit before ending the program?
Have let it go for up to 15 minutes or so - recently ie. today, not so long.