Arctic Silver has issued new instructions for application of
AS5 for Intel dual and quad core CPUs. Who knew?
http://www.arcticsilver.com/ins_rout...2intelas5.html

"Put a very thin line in close proximity to the center of the
heatspreader as depicted in red, like the photo at left. Be
CAREFUL to apply the thermal compound in the CORRECT
DIRECTION."

What is not clear is how thick the line is supposed to be.