ANNOYING POP-UP ADS ON METALSUCKS?

We’ve had a couple of users complain about pop-up ads on our site. We would not knowingly EVER foist those upon you. So we’re trying to figure out what’s happening — were these a couple of isolated incidents or is there something wrong with our site? If you DO happen to experience this, please take a screen shot and take note of what banner ads are running at the top of the site (below the MS header) and the top ad spot in the left sidebar, and send these to vince [at] metalsucks.net. Thank you, and sorry to anyone this has affected.