...Firefox 2 or higher to view.? I had the most recent browsers when this problem began, but I reinstalled both browsers anyway with most recent versions which are Yahoo optimized to see if this would fix the problem, but the help was only temporary. I got Yahoo home a few times and that was it. I can't log onto a few other websites without getting the same kind of message. My system info is reporting the correct version of browsers.

What happened and how can I fix the problem?