There are several  reasons your Internet is crawling. The first issue is the surfing speed, between your computer and your Internet supplier. First off all you have to check the internet speed.  get in site www.SpeedTest.net. this excellent visual site will show you your IP address, your internet supplier server near your house. By pressing Begin test , the site will check the internet speed.

The internet speed, should be more or less bandwidth provided by your Internet supplier. If the internet speed is lower then that, Repeat the test several times. If the result continues to be low, contact your supplier, probably there is a problem.

Another factor slowing the internet speed, is the your toolbars. most users are not aware, but the internet toolbars makes Internet slow.
You should disable unnecessary toolbars or remove them.
After that you will say "fast is my internet"!
 

To actually remove toolbars, you should press the start button and Control Panel.

Another major factor slowing the internet speed is unnecessary garbage files on your computer, and disorder on your Registry System. To treat them use free.ccleaner. download and install ccleaner.exe.