in this VMware KB: Timekeeping best practices for Linux guests explain for linux redhat 4.7 we must set :
clock=pmtmr
divider=10
hpet=disable
i don't understand about that bro... for what? the article make me confused hahaha 
so what should i set.. can u give me example about this...
im using VMware esxi, 4.1.0,260247 and i'm using guest OS (red hat 4.7)
the article very nice but i'm confused
please help me bro