Vista - Flash Player Buffers a LOT!!

I have vista x64 and run flash player 10 on the foxfire 32-bit browser. Every time I try to watch a video online (youtube or others) the flash player has to keep stopping and "buffering" the video.

I just upgraded my dell laptop from a Inspiron xp machine to a dell studio with vista 64. I NEVER had this problem watching videos online with the xp machine!

Why would this be happening with the vista machine?? I still have my old laptop and can put the two side-by-side and run the same video at the same time. The xp machine runs the video flawlessly - with NO BUFFERING or freezing, while the vista machine sitting right next to it stops - freezes and has to continue to "buffer" the video. Both machines are running foxfire (32-bit on the vista machine)

What's the deal??? I'm very irritated! The vista machine upgrade was quite a bit more money then the inspiron and I thought things would run BETTER not worse!

I have similar issue. Reinstalling flash plugin does not work. My vista x64 is tri-core processor. My other single processor xp laptop out beat my vista x64. Any solution? Thanks.