So I have a macbook pro that I purchased in 2010 new and this laptop has been phenomenal until recently when I installed the latest OS Mavericks back in oct. 2013. I started to experience slower speeds when I open apps such as iPhoto, iMovie, and Safari. I have not made any changes except installing the new OS version. The specs of my laptop is on my signature. Can anyone suggest what I can do to bring back the speeds I used to have prior to installing the new OS? And would anyone know what and why it causes my laptop to slow down? I mean my laptop was perfectly fine a few years ago and today it is to the point that it is frustrating to operate... Thanks, in advance.