I get this same message from McAfee enterprise, it is ONLY when browsing the forums on this site. Confirmed after deleting all internet data and opening only these internet forums, every page brings it up, seems the site has been infected. This is on my work machine, mind you. Have not tried at home.
Could be, it may also be a result of an ad being infected that may or may not have anything to do with this site as well. I've seen that happen with many forums in the past. I will browse a little bit more and see if I can narrow it down to anything in particular.
I'm also getting this from the tomshardware main site, please report this to the administrators. Doesn't look like a false positive to me. It's probably some nasty java script code from one of you advertisers.