I thought this was a joke or plea for attention until the post with links to other people with this same problem.
It seems like you got it under control, however if it becomes a problem again, my suggestion is this:
Take it to your local Apple store and purchase a ProCare membership. It's $100 for a year or $80 if you're a college student. Among other things, with the membership, they will literally clean out your system inside and out. As soon as you pay for the ProCare, take out your Macbook and tell them you want to have it cleaned out.
Maybe even tell them why. Weird.