I have a MacBook Pro 15.4", 2.5GHz Core 2 Duo, 4GB RAM, NVIDIA GeForce 8600M GT dual booting Mac OS X and Vista Ultimate SP1. Whenever I run the game Assassin's Creed I noticed that it's been somewhat laggy, so naturally, I ran Task Manager to find the CPU usage, just to see, and lo, and behold, the processes aren't split evenly among the two cores. I attached a screenshot of the CPU usage, and I was just wondering if this is at all normal. Also note that whenever I am running anything else, the processors are, more or less, performing the same amount of work.