Hello: Looks like a great forum and i hope to learn a lot from it and share whatever little i know. I have a laptop and desktop both running XP Home with 512MB of RAM. I find that the free RAM available on the desktop is much lower and when i checked the RAM used by processes (CTRL+ALT+DEL) - the same process (eg. explorer.exe) uses almost twice the amount of memory on the desktop than on the laptop! This is generally true for most other applications that are on both PC's. What can be the reason for more memory usage on my desktop and what can i do to reduce it??