Intel core i3 3.30ghz, 2 gig ram and a GeForce gt430 w 1 gig. These are stand alone units that only run your player. I had the same problem with an older set of computers, thinking they were the problem I replaced them with these new units. I have IE installed as the browser. Would a different browser make a difference.
It seems like every time a add an HTML5 element that displays a weather radar in it I experience the freeze. My RSS feed still runs and the images work properly. The HTML elements are the only part being affected.
If I restart the computers they will run properly for a few hours and then experience the same problem.