In my readings in the forum and blogs, I often find people having problems with the chessboard and some others. I'm using the latest
Firefox web browser and I don't have any glitches. People who want to take advantage of free and good software anyway should perhaps install
Linux (I'm using
Ubuntu and it's great!). Firefox is there by default! Windows users should keep their PC updated, which should include the latest Internet Explorer.
Enjoy your Chess games!