pages loading slow?

Starting today, my firefox was really slow. I do not have a virus or spyware / adware. I cleaned the cookies and did a disk cleanup. I tried Internet Explorer and it has been slow as well. Normally, it takes a half a second to load a page. Even animations and video clips are really slow. Any help is appreciated. Thank you.

will try – http:/ / onecare.live.com / Site / en / center / tuneup.htm

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