I have some banners hosted with excite and they appear when certain keywords are typed. The problem is , they are not working on internet explorer 7.0 on our system as they should do i.e. instead of our banners, any other random banner appears when our keywords are typed. This does not happen when we type keywords using firefox and this also does not happen on other systems outside our office. Is Internet Explorer hijacked or what else could be the problem? Or the hosting website is using a script that randomizes banners?

Does it show other banners? Could be that I.E 7 has Popup Blocker?