Malware on Here

[Lewdog]

Every time I go to reply to someone, or post a thread, my Avast pops up a signal that it has blocked some kind of Malware from this site. It says it is some kind of image. Is it an ad from your hosting company? The other forum I normally go to is down and I'm not sure if it is coming back up, and I had remembered I signed up for this forum a long time ago so I came back here. I'd hate to have to quit coming here because I get a virus. Anyone have an idea what's going on? I tried to take a screen shot of it, but it isn't actually on the "screen" but on my desktop I guess so it doesn't show up.