(I've asked this over on stackoverflow already, but thought I'd ask here as well)

I'm currently running an ASP.NET application on IIS 7.5 on Windows 7. When I access this application on Internet Explorer (either 6, 7 or 8) it is incredible slow and often fails to load at all. There are messages at the bottom saying:

Waiting for http://localhost/....... or sometimes waiting for about:blank (I've read that this can be a virus, but I've run all the usual checks and it's not).

constantly, but it returns with the usual: "Internet Explorer cannot display the webpage"

I've also tried this by using 127.0.0.1 and the machine name, with the same results.

I've tried the same application on the latest Firefox, Safari, Chrome and Opera and they all work fine. I've also installed the same application on a Windows Server 2003 machine, and it all works fine via Internet Explorer.

I've also turned off the IPv6 setting on the LAN connection.

Soes anyone have any ideas why this doesn't work with Internet Explorer and yet does with other browsers?