Rome thread triggering threat alert

[Vincent Butler]

It seems that when I enter the Rome Total War forum, something triggers my antivirus, and it says a threat was detected. I use the free version of Avast. It says

Object: https://clients1.google.com/tbproxy/af/query?client=%20Google|{gzip}

Infection: VBS:Malware-gen

Process: C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

I run a SmartScan, and it doesn't turn up anything, and it just started today. It is probably just a false positive, but I figured the tech group might want to know, and was wondering if anybody else was having problems.