It does work, however, kernelpolling has a lot of timings that should be tweaked to the appropriate platform/cpu performance. m0n0 aims at slow hardware and has an image for each platform which makes it possible to supply different sets for different hardware. As pfsense has only a general image supplying different optimizations is not that easy (unless we add some kind of pulldown menu with different optimizations or even a tweak page). This is something we already have discussed and even tested different settings with a wrap (see http://wiki.pfsense.com/wikka.php?wakka=Tuning ) and might appear in a version after 1.0.