The chipboard is using some services from Google to distribute the ads that you see at the top of the chipboard pages. (This is something that Greg setup a long time ago). For some reason, your antivirus is now believing that those ads (and the google's software that generates them) is a virus threat.

There are a lot of other sites who uses Google to distribute ads having same problem. Here is a link to Google's AdSense forum where others have complained about it:

http://www.google.com/support/forum/p/AdSense/thread?tid=07e3ed100c2ff443&hl=en

From what I can tell only people using Kaspersky antivirus or ZoneAlarm antivirus are having this issue. Kaspersky has already confirmed it is a "false-positive". Hopefully ZoneAlarm will do the same and update their virus definitions accordingly.

Please let us know if you hear anything directly from ZoneAlarm about it.

Thanks again and sorry you are having the problem.

Brian