I have a Dell Inspiron 9400. It has XP SP3 Pro Version 2002. Intel T2400 Processor, 1.83GHZ. .99GB of Ram. I use McAfee AV protection. My laptop has become progressively slower over the years. It takes much longer to boot up and then when the screen comes up the light that signifies hard-drive usage stays on for a long time, sometimes hours, signifying something accessing the HDD. Using MSCONFIG I have eliminated several unneeded start-up programs. This helped a little. What else can I do to speed this system up.