|Have you tried using a different browser to see if the error is there? It might just be restricted to IE. If that's the case, consider upgrading to the latest version of IE8 (if you're really desperate to keep IE)|
Or download Firefox or Safari. Those browsers are generally a lot more reliable and less likely to get screwed over by errors like this.
I also read that you could be receiving this error if you have Symantec software installed. Check out the article below for more info on correcting it if that's the case
Hope that helps
The Definitive Guide to Registry Cleaners &