Yeah, reinstall the OS before you start playing with it. People have mentioned that the system from a clean install runs much more smoothly. Run the battery all the way down, till it goes to its final sleep and then charge back to 100% to get your battery calibrated (this should be done at least once a month to keep your battery meter accurate). Also download Onyx and make sure to run your cron scripts at least once a week, and don't forget to verify and repair permissions everytime you download software. Also if your interested in upping your ram, theres a thread in this forum where outpost.com is selling a one gig RAM stick for 149 bucks (very good deal). Have fun with your machine!