How to increase system speed....?

Hi friend's....
In my system i installed xp and fedore core.Now my system configuration is 1GB RAM with pentium-4 processor. Now if i am working in xp, the system become fast.But if i went to my linux and work means, the system become very slow.Generally i using Eclipse application in both platform....

Is there any way to speed up my system when i work in linux platform.....?

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