You are using an incompatible web browser, Facebook said

facebook-browsers

I almost have no problems accessing Facebook site using many different browsers. But, I sometime I found problems when using Opera 10 browser. It says that I’m using incompatible web browser. But, it only happens randomly, even when I do the same actions like reloading pages, clicking on the links. And so far, it only happens on Facebook-related pages.

The error page suggests me to use these browsers: Mozilla Firefox, Opera, Safari, Microsoft Internet Explorer, and Flock. I do using Opera, but not the latest stable release. So, is it Facebook? Or, Opera 10 doesn’t play nice with Facebook yet? I’m using Opera Version 10.00 1 Build 1355 on Windows XP when I experience this problem.