Rank Checking with Google, Include Snippet of Code on Page

ogletree started a thread over at WebmasterWorld that might be the oddest occurrence I have seen in a while. The thread is named Google is Now Asking for a Code if You Use a Rank Checker and ogletree reports using a rank checking tool (a tool he has been using for over a year now), and getting a response back from Google that he has a virus. He said "I get a google page telling me I have a virus and that I can't search until I put in a code that is in a picture on the page." An other member saw the same thing, so its just not this member. But both only saw this happen once and not happen again. Odd.