Joomla! Discussion Forums

I have a question that has puzzled me for some time now. When I use the banner component on a website, the banners do not display on my computer. On every other computer I've checked the banners display perfectly. I have also used the AdTrack component with the same result.
This is the case in all the major browsers that I have tested ie Explorer, Mozilla, Opera & Netscape.
I thought it maybe to do with popup blocking but on or off makes no difference.
I run Ad-Aware SE and Ad-Watch SE but turning these off doesn't make any difference, neither does disabling Nortons Internet Security 2005
I would appreciate any suggestions on what it could be.

If you are using Windows, check your windows firewall and if you have installed any toolbars, such as Yahoo, check that they don't have some sort of blocking mechanism.