Hi, I've recently been having sudden frame rate drops while playing games on my 2009 13" MacBook Pro (2.26GHz, 2GB RAM, 9400M). After a few minutes of gaming at a steady rate, my performance will drop significantly from upwards of 40-60FPS to 5-10FPS. This happens across multiple games (e.g., Battlefield 2, Counter-Strike: Source), and even with fresh installations of both Windows 7 and Windows XP. My frame rate drops regardless of what video settings I use. In Counter-Strike: Source, it's happened with all my graphics preferences set to their lowest values, including a resolution set well below 1280x800. Could I still be maxing out my shared VRAM (256MB)? I've been playing these games for over a year on this computer, but have only recently had this problem. Thanks.