If I right click MyComputer then Properties I can see that my CPU is "Pentium(R) 4 CPU 2.53GHz" - no suprise there. The next line says simply "1.89 GHz", no caption, no explanation no nothing, just that. Someone care to enlighten me as to what that second line means.
I also noticed during a recent reboot, that the b/w intro screen says something like Pentium 4 1.9GHz. The machine is not hot so I don't think it is throttling. <fx> shrugs shoulders </fx>