My active window will randomly become inactive (as if I clicked my desktop), even if I'm not touching the computer. So, say I'm using Google Chrome, or Safari, or Pages, and I'll be working when randomly the focus will shift. Now, note that the menubar still says I'm in my current app, but the app will just grey out and I'll have to click somewhere in my open window to regain focus. This'll also happen even if I'm not touching the computer (I've checked to see if it's a keyboard/trackpad issue and it's not). Ideas anyone?