I have heard about repairing permissions in disk utility so I had a look to see if I needed to. It looks like I do because the button is highlighted. But before I do anything, I was wondering what repairing permissions does? Thanks.
Also ONYX or Main Menu are good maintenance utilities. MacSweeper is for 10.2 and before. I use Main Menu, but ONYX used to be my favorite. Repair permissions, run other maintenance scripts, clean caches, or run a number of them in serial to keep your system running at peek performance. They also allow access to other features of OSX that you might not easily find through the normal GUI if at all.
I also recommend using the SEARCH feature of these forums. It will keep people from jumping on you.