I have seen it and as far as the worm ---I run Norton too and I get not report of a worm ---virus are caused by attachements that are opened --just loging on a site will not give you a virus ---it may give you adware or spyware---it is according to how your adware software read it --as some read all cookies as adware ---

As far as the parsing ---that is not a bug it is done to prevent shouting and is set that way