LXer: Drastically Speed up Linux with Preload
 

Published at LXer:

Preload is an "adaptive readahead daemon" that runs in the background of your system and observes what programs you use most often, caching them in order to speed up application load time. By using Preload, you can put unused RAM to good work, and improve the overall performance of your desktop system. Best of all, it's easy to install and use!

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Sounds familiar...isnt this what Vista does?

I have other more useful things to dedicate RAM to...

XP too. One of the tricks to speed up slow XP booting (one of many) is to clear out the prefetch directory.