I just bought a MacBook Pro (15.4 inch model) I've literally had it since Tuesday night and I've noticed that it gets pretty hot even when it's running on a flat surface with decent airflow. Is it normal for it to get hot like this? Should I be concerned? Will I have some type of problem or is this just how the newer MacBook Pros are...? FYI I switched over from a Windows XP desktop. Any information would be much appreciated.