Finally got the AS5 and cleaning fluids, a bit of time, and the nerve to open the computer up. Kind of fun until I lost one of the screws--finally tipped the computer right side up and it fell out (from where?) so I was glad I wouldn't have to spend hours crawling on the floor looking for it.
After reading the posts and looking at the "heatsink", I figured that a thin film on the cpu wasn't going to make enough contact. Instead of putting a near translucent film of AS5 on, I spread a thicker coat on with a razor blade, then put a small dab, about a half a grain of rice worth, onto the CPU before remounting the heatsink. Maybe this wasn't the ideal method, but the result has been great.
Before, it would spin up to 6200 rpm on youtube or other video use. Now, when I did the CPU load test on CoolBook, the temperature stabilized at around 80 degrees after about 3 minutes, but the fan NEVER went above 2500 rpm! Fullscreen youtube produced the same result. I haven't put it to super heavy use, but in everything that I normally do, the fan hasn't gone about 2500 rpm since replacing the thermal compound. Quiet, quiet, quiet! In normal use, the temperature can be as low as high 30's to 50 degrees, and the heatsink is often a few degrees below it. Well worth the effort!