Anti Virus software blocking content

I've noticed today that when I've been navigating around the forum,that my Antivirus software keeps alerting me that it has blocked potentially harmful content from a malicious source or suspicious website and I was wondering if any of you guys have noticed this also? It's only today and on this site and forum that this is happening and I'm running mcAfee. :think:

Thanks Sid,hopefully it will resolve itself soon.