Some Web site operators are complaining that Google is flagging their sites as containing malicious software when they believe their sites are harmless. At issue is an interstitial page that Google presents when a user clicks on a search result link to a site that Google believes contains malware. The page cautions users with the words "Warning - visiting this web site may harm your computer!" Google does not block access to the site, but a user must manually type in the Web site address to con