I think I have noticed the same thing. I am running vista sp1, and have noticed slow response times periodically and a couple of times so much memory was taken that other programs stopped responding and I had to reboot. One thing I noticed that even at idle cpu usage was around 50%. You never know with Vista was causes what but I thought I would note this. Did not experience this at all with same set up on v4.
Supported videos include:
Please paste your code into the box below: