There are two software applications that may cause this problem.
Zone Alarm Pro
Zone Alarm Pro, a product from Zone Labs. This will result in pages only partially loading and then stopping ("timing out"). This issue has been fixed by Zone Labs. Please upgrade to Zone Alarm Pro version 4.5.xxx.xxx or later.
Norton Internet Securities
If you’re running Norton Internet Securities 2004, you will need to make a change.

1. Click on the NIS 2004 system tray icon and choose "Norton Internet Security" from the top of the list.
2. Click on "options" at the very top
3. Click on the "firewall" tab
4. Under "HTTP port list" find the number "8080" in the list, highlight it and click on the "remove" button.
5. Click "ok"

This is a bug with Norton Internet Security 2004, early versions of Norton Internet Security 2003 works with no problems.