Since the time i have installed lion my mac book pro is working very slow

its been couple of months since i installed lion, after that my pro is working very slow .
would want to knw what to check ??

I don't really understand why Lion slows down computers, but it obviously does. What worked for me is upgrading my memory from 2GB to 4GB. Also, check your hard drive space. If it is close to full, try upgrading your hard disk to a better model.
If neither of those work, you might have to do a clean reinstall of Lion. This involves cleaning out all your data and reinstalling your OS.
Cache-file cleaners like SpeedUp Mac ($29.99) can help a lot if Lion was pre-installed on your Mac, but if you installed Lion manually, they don't really do much.
Tip: NEVER try MacKeeper to make your Mac "faster": I had the misfortune of it wiping out all my data (movies, music, photos, iMovie projects, iPhoto photo books and faces, etc.)
Message was edited by: apple is awesome

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