I just purchased a Dell 8250 with a Pentium 4 2.66 ghz, etc.

I have had some very bad performance problems with this machine.  When I go to click on an icon the desktop, it can take up to ten seconds to load a program like Internet Explorer.  Other programs can take longer.  I have defragged to no avail.  Sometime when I click an icon, it takes a few seconds for it to even aknowledge that I clicked it.

I contacted Dell Support and they told me to reinstall... what a pain in the @ss.

Any suggestions?