Didn't work, but it was a great idea.
I don't get this, I can't find www.google.com in any search of the text in files on my computer. I'm clean virus and malware adware wise, but this is tough.
You would think some websites are blocked based on some file connected to the registry, but I can't find it if it exists.
There are a couple ideas here
http://www.daniweb.com/techtalkforums/showthread.php?t=8169&page=1
Just out of curiosity, you could try using a different browser to see if you still have the same problem.