this is a friend's site, she asked me to figure this out for her but I couldn't see what was up with it www.myslovitz.us/updates.php is the page that's having problems- randomly some of the text links will turn into text banners I logged into her ftp account and made sure she had the right ad_network.php file for just plain text links. this is what controls this, right? everything seemed fine. I even regenerated the code for her, and uploaded a new version of the file.
Flush the ad_network_ads.txt file... if it was set to banners before, and then the ad_network.php file was change to text link ads, the banners will still be in the cache.