There is nothing more frustrating than trying to do a search on your computer, and for it to take so long that it would be faster for you to walk to the library and do the search for yourself. So if you are asking yourself why is Internet Explorer so slow on your computer, there are a number of reasons why. The most common reason for slowness is the fact that you are not running an up-to-date version of the program. Older versions can get bogged down and become incompatible with updated operating software. This makes it slow and frustrating. So the first check is that you are using the most current version of IE.