I recently purchased this 13" macbook pro 2.4ghz a couple days ago and noticed that sometimes the keyboard and trackpad becomes unresponsive, forcing me to hold down the power button to shut it down. Everything on the screen works, but the trackpad and keyboard doesn't. This happened, on average, 2 to 3 times a day ever since I've owned it. Has anyone on this forum experienced this issue? if so, how did you find the solution? Please help!