Hi I just got a brand new macbook pro 15 inch 2.53 ghz with the 250 gb, 5400 rpm hard drive. It sound like hard drive is parking and unparking (clicking) a lot when the computer is a idle or just sitting at the desk top. Is this normal, and how do you stop it? Also, how do you update firmware, does the computer automatically do it? I have boot version MBP53.00AC.B03 and SMC Version (system): 1.49f2. I have tried downloading firmware but the computer tells me I dont need it. I am new to mac so go easy on me. Thanks!