Surface tension with a P4 can be a problem with any thermal compound. To avoid removing the CPU with the heatsink, remove the heatsink right after shutting down the system. This way the thermal compound will be warm. The other trick is to gently twist the heatsink a tad after removing the clip. This helps break the surface tension.
We did extensive testing on how to apply Ceramique. For a small die like an Athlon, a little dab in the middle followed by a twist of
the heatsink works as well as a carefully spread layer. Please note we do not recommend this application method for AS3.
Colin Thompson
Arctic Silver, Inc.