This is very strange and has gone on now for over a month.. Yahoo ads do not show up on any website i go to.. Adsense shows up fine, other ads show up fine, but no Yahoo.. IE7 shows a 'page not found' error and Firefox shows a blank where the ads should be.. Did i change some setting somewhere?? i use bitdefender antivirus and i use Windows XP on a PC. I also have SPYbot spyware detector.. but i can't find settings anywhere to just exclude Yahoo.. Any ideas...