My browser is Firefox 3.0.6 under amd64 Debian Linux 5.0. Under Debian, Firefox is called Iceweasel. I have the Silverlight plugin 3.0 for Firefox. When I try to play the computer, I can see the board, and when I click on a hole a red peg is placed there, but other than that, there is no response. Is the computer opponent working?

I just tried it and it's working for me on Firefox 3.5 with Windows, Silverlight 3.0. I have never tried it from Linux before. Do you get any javascript errors?