As I was loading the forum page this morning I got a popup from one of my antivirus programs warning that some trojan horse was trying to download onto my computer. I closed the browser window before the page could actually load, but nevertheless, I had this spoof "antivirus" program (called "Vista Security 2011"--it customizes its name based on what your OS is) show up on my machine. The same thing happened about a month ago, and though I wasn't able to pinpoint its source that time, I'm pretty confident that it was also an ad that showed up on this site. (Awhile ago a bunch of us on AF had a problem with a different virus originating in a Curves ad on that site, IIRC) Luckily this time I knew exactly how to get rid of it (System Restore, basically), but it was really frustrating the first time around. If someone could check the ads and see if they can find where the virus is originating, it'll make browsing a lot safer for us.