dang you guys are keeping cold cpu's. stock p4 heat sinks don't cut it guess. my p4 ht running at 2.6-2.8 (2.6 is un oc'd) runs at between 47-52*C.
in theory theroy keeping a cpu too cold is bad for performance. remember, your comptuer uses conductors to transmit electric pulses, for electricity to flow electorns must be able to move freely inside the conductive material. as temps are lowered there is less molecular movement which translates into the electrons not being able to move as freely, thus resulting in higher resistance within the conductor.
keep in mind that is all in molecular theory, not in practice. at the temps we are talking about you probably won't see a diff. running cold vs. warm
AMD 64 3800+
X-connect 500W psu
Custom Quake box under planning and soon to be under construction