While visiting my Mother earlier she was on Facebook and clicked on a game called Zuma which she plays regularly. While the game was loading, Avast popped up saying Malware was blocked. It said infection HTML:Iframe-inf. I have put the link below with a screenshot of the warning. Is this a false positive or something serious?
She uses Avast free on windows 7 64bit.
hxxp://ox-labs.popcap.com/www/delivery/afr.php?cb=42509172&zoneid=52|>{gzip}