Hey Toddfather. Seems like we're in the same boat. I love my MBA and for sure, that's a great portability masterpiece. But for gaming, there's a big issue. It looks like your "jumpering" issue is caused by the CPU throttling down. That implies it can reduce its frequency down to 200 MHz (as personally observed) and even shut down in rare instances. Simply put, that thing overheats too much. At least, mine cannot handle any intense 3D gaming properly for more than a few minutes. It's not that the CPU or graphics chip are not able to handle it. It seems like it just overheats. But for most applications, including web browsing and video watching, my Macbook Air is quite alright.
