Did you update your video card drivers when you upgraded to SW2012?
Your computer will not be a rocket ship. It is spec'ed to the lower end of the performance scale.
What are you doing when your computer locks up. How much stuff do you have running in SolidWorks and open in general on your computer?
I just updated my graphics card.
I will see if that fixes the issue.
This thread may be of interest
though question was never answered and no input from SWX either - no surprise there.
I should have updated this... Sorry.
I did not notice a difference after the update.
After reading the above posted thread I guess I will just tough it out till I upgrade to Windows7.
Thanks for the heads up Neville.