I am running a very similar system to yours, with a bit less RAM - http://forum.cyberlink.com/forum/posts/list/8445.page but I'm not experiencing any hangs, freezes or crashes. It just goes to show the vagaries of PD (and probably other software) when it's used on different systems... &, in this case, very similar.
I know that's not a solution to your problem, but it does indicate the possibility that the root cause of the problem may be outside PD.
I guess when you uninstalled previously you removed all registry traces before reinstalling... yes?
Cheers - Tony
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