Good ol' Kaspersky. They've registered the site with these alerts several times. Never been able to get an answer as to why or what they're blocking. Because, from what interaction I've had with them, they don't know what they're doing. (That's my personal opinion, if you'd seen the email exchange, you'd see why)
Here's a check today, of the site.
http://ScanURL.net/?u=www.steelsoldiers.com#results
Then you can also see the same results from multiple other sources listed below.
A scan of the forum software shows no suspect file versions.
I went back and looked up some of their issues in the past, they were barking about the clientscript directory. Again, shows clean.
http://ScanURL.net/?u=www.steelsoldiers.com/clientscript/#results
If you have the alerts it's giving you, I can try again to send it to them to have it removed. But I feel I could likewise print out your alert and place it in my wastebasket and end up with the same result.