OK so I am only getting the warning from FireFox, latest version, and I am running Windows 7 Pro and Avast AV. So that must be the Google thing. When I log on with IE 9 I have no warning what so ever. As far as I am concerned there is just a little glitch in the system.
The warning is a Google thing. Google keeps a database of sites that may harm your computer. I guess since this has been happening, Google has become aware of it and has flagged it as a potentially harmful site. Your computer may or may not get attacked; the warning is just a warning.
However, if your own computer's antivirus is telling you that you have a virus, then you definitely have problems. That's not a glitch.