Please provide more of an explanation of what that is about.

Is that about uploading and downloading speed tests? Most such test websites use the Shockwave Flash plugin to do such tests. If there is a difference between Firefox and IE then this could be a problem with the Flash plugin. You can try this website that uses HTML5 player for testing: *http://speedof.me/ ----- You can check for problems with current Shockwave Flash plugin versions and try this: *check for updates for your graphics drive drivers<br>https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration *disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later) *disable hardware acceleration in the Flash plugin See also: *http://kb.mozillazine.org/Flash#Troubleshooting