internet access uses large memory of HD

Internet Explorer and many other browsers store temporary copies of all the pages you visit, including any graphics. This is probably what is taking up the space. If you look there should be an option for adjusting the space taken up by temporary internet files, you can turn this value down or even off if you want. Just be aware that this feature is intended to speed up internet access by storing frequently used web pages and turning this feature off can hinder performance a bit.

Hope that helps.

The answer above is correct. I'll just show you how to disable the feature.
1.Open IE
2. go to "Tools" and "Internet Options"
3.Under "Temporary Internet Files" frame click "Settings"
4.Slide the slide bar "Ammount of disk space to use" to the left so you see how much space is used. You can leave it at 1 Mb.

5. Remember that this will slow you while browsing webpages.

Regardes,
Victor