Hey so this is my second MBP, after 3 hard drive failures and 2 logic board replacements within a year apple decided to replace the unit and give me a brand new one. I've had it for about a week now and already Im fearing this computer will be as much trouble as the last one. There is a very strange noise coming out of the left side of the computer around the tab key and the left palm rest, it sounds like a cat purring. Its definitely not normal and is VERY annoying. Any thoughts as to what this could be?