I have a 13" Late 2008 Al. Macbook, and something strange just happened. I was typing in Pages, when I started to hear and feel something clicking underneath my right palm. I recognized this as the hard drive, so I immediately shut down the computer. Tried restarting and heard the clicking again, so I held down the power button and force shut it down before it fully started up. Turned it around, removed the battery for a couple of seconds, then replaced it. Started up again, and the clicking disappeared; all my files are here as they were left. I'm not sure exactly what caused it, so I'm wondering should I take it in?