Matt, You might want to install a keycatcher on some of those computers to find the culprit and a hidden security camera wouldn't hurt but you would have to notify the employees of the devices to avoid legal problems. Here's a link where you can get a lot of great stuff to keep an eye on your office. <A HREF="http://www.cyberguys.com/templates/SearchProducts.asp?search=1se&child=&sdesc=Security+Devices&curpage=3&ureq=y" target="_blank">http://www.cyberguys.com/templates/SearchProducts.asp?search=1se&child=&sdesc=Security+Devic...</A>