I'm a mod of conceptart.org (spam hunter) and it appears that only in Firefox does Avast claim that it has blocked a trojan - Chrome & IE appear to be fine. Googling the site makes it come up a lot including my thread. I know we have a lot of spam and I'm cleaning out 10 years of neglect. Also the front page was hacked a while back, but is now fixed. We're on an old version of VB, which probably doesn't help a lot. I understand AVG has also started blacklisting the site. I'm not one of the tech people, so it would be great if someone spelt it out in easy terms where the problem is so I can pass it on to someone who can do something.
As you can imagine if this continues it'll kill the site. Please help as a lot of people love the site (including me) and new members are what any vibrant forum needs.