i have a macbook pro I got in 2009. 2.26 GHz Intel Core 2 Duo with 4 GB 1067 MHz DDR3 and 500GB drive. When I first got it, everything ran incredibly smooth and efficient. It has been seriously lagging lately, especially when I am in safari. I like using safari but sometimes it will just load forever and i have to open firefox. I took screen shots of my activity monitor and will upload them, can anyone tell me if anything is abnormal or any other advice? I have mackeeper and run that regularly and try to not run too many programs at once. Thanks.