I bought the ASUS EeePC three years ago when I was still in College. At first, it was pretty good. However, as time goes by, it works much slowly. So I am wondering if there were any methods helping me work this out, to make it faster? If not, then I have to buy a new one for work. Of course, only $500...The brand is not so important. The quality counts most. Anyone could do me this favor? It would be very nice of you to help me out.