Remove Unwanted Add-ons
When you install IE (version 7 or later), it automatically installs a number of add-ons. Most of these add-ons are not useful to everyone. They are more of a burden on the Internet Explorer process and make it run slow.
Other than the default add-ons, several other Internet related software push in their own IE add-ons when installed. Your download manager, some security software, Adobe and Office products etc always try to install their own add-ons to the Internet Explorer.
Check out the add-ons in your copy of Internet Explorer and see which ones you don't need. For example, you can always remove add-ons for blogging, email, research etc.
To view the add-ons in the Internet Explorer, open Manage Add-ons window. You can get the Manage Add-ons Window by pressing ALT + T + A in the Internet Explorer window. To disable/remove an add-on, click on the add-on to select it and then click on Remove or Disable as applicable.
You will notice a good improvement in the IE speed after you disable/remove a number of add-ons.