Just placed my order for a new 15" macbook pro 2.66 ghz (dual graphics), and after reading on a few of apples support forums, it seems like quite a few people have had an issue of the screen flickering, especially when using the "energy saver" graphics card. The computer will be here tomorrow and I am just wondering if this problem is really that common, or if it just seemed like that because I was on the support forum! This is not my first mac, Just an upgrade!