I suggest you update your video Drivers. The same thing happened to me so I was advised to do that and it all works now. To identify your drivers and or any other problem, do a PCPitstop test at:
Hope this helps
OS: XP SP2
I often visit a site called Africam where they have a live webcam on the animals. The webcam seems to be coming from a site called wavelit. The URL is http://www.wavelit.com/popup/playerAfricam.asp#
Suddenly the video won't come up and neither will the ads on the side. It's just a big blue square.
I have played around with cookies and trusted sites and restricted sites. I have turned the popup blocker on and off. All this to no avail.