We are aware that many users attempting to access our communities today are seeing malware warnings from Google. We want to assure all our visitors that there in not nor has there been any malware distributed via our sites.
According to Google, some of the advertisiment insertion code from a third-party ad provider was flagged as potentially malicious (it was not actually malicious).
To expedite the resolution of this problem, we have removed all ad code from the site. We expect the warnings to cease shortly.