Hi Burn, welcome to the forum
It seems that avast! is alerting on a javescript file that has a very link link:
18/01/2011 21:19:38 hxxp://forum.animeserv.net/public/min/index.php?ipbv=31005&charset=UTF-8&f=public/js/ipb.js,public/js/ips.quickpm.js,public/js/ips.forums.js,cache/lang_cache/2/ipb.lang.js|>{gzip} [L] HTML:Iframe-inf (0)
In this javascript file (ipb.lang.js) there is an iframe that points to a site that is blocked by the network shield, this is causing the alert.
Scott