nVidia OpenGL driver

I have a Dell Dimension 8200, on some WEB sites I get an error "Driver component sizes mis-match" it doesn't happen all sites, and I can access to same web sites with my Notebook, Dell Inspiration. I cannot figure out what is causing it, it only happens on my Dimension and then only on some sites. It also locks up my system so badly that I need to turn it off in order to get it to work.