I have a fairly new Macbook Pro (Dec. 2012) with 4GB of ram and prior to this only had pc's, so please bear with me as I'm still learning terms and commands. I don't have much loaded: I think one downloaded app and maybe 10-12 cd's on itunes, though I do have Lightroom 3 and a good 1000 pictures from my Canon 60d but have had this loaded since day 1. I noticed that in the last week I started have issues scrolling in terms of lag as well as lag between when I type and when letters show up on my screen. I haven't used Lightroom or added new photos since then so not sure if anything is related there. I tried to do some research and it looks like I have about 200ish MB of 'free' space and am using over 1GB of 'wired' space which I guess is really high? Not sure what I can do or if this is the direct correlation to the lag I'm seeing. I've attached a screenshot with "active processes" shown, not sure if that was the right choice from the drop down menu. Any help in as simple language as possible for this Mac newbie would be fantastic.