Try defragging the hard drive, too. Go to My Computer and right click on the "C" drive (I assume the C drive, the main one). Choose Properties. That should bring up a tab for tools/utilites/whatever. One of those will be defrag.

Turn off antivirus and other programs when you do this.

It'll take a while, so have a drink and play some music.

Then switch to a good browser, like Netscape 7.1 or Opera.

Also, Norton Systemworks Pro has Roxio GoBack as part of it. MUCH better time machine than Microsoft puts in!