In the first couple weeks, there was a lot of discussion in the threads about heat & fan issues with the i7, and a number of people who opted for a seemingly cooler and quieter i5. I haven't seen much discussion on this recently. I'm just wondering what peoples views are now or if they have changed at all after a few more additional weeks of use - is there really a heat/fan issue with i7 as compared to i5? Or perhaps the i7's have "calmed down" after a little more use?