Nithin Kamath's Weblog

Just found this one while browsing,

The author of the page has focused on the ones which are simple to do and won’t cause problems if you get it wrong, rather than listing registry tweaks etc.
Some of the one’s which have been suggested are:

• Improving memory usage
• Optimising the pagefile
• Running bootvis to improve boot time
• Defragmenting the pagefile
• and many more…

Read the full article

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I have not tried any of these specifically, so if you do try it out and if it does really help, it would be great, but i feel most of them are the ones that were already mentioned in one place or the other. So good luck if you are trying these out.