You need to clean out all these un-necessary files clustered on your Mac system. With time, the performance of the MacBook is bound to degrade, but have you ever wondered the exact cause behind it? The main reason behind all this slowness is the piling of not only temporary files, cookies, but there are other iTune files, junk files and duplicate files that keep on increasing with time. You have been using your MacBook or MacPro since long now and unlike the speed of a new system, its speed has terribly gone down.
