From Redhat type :
then enter the CMOS setup by typing :
Fn F1 (purple lettering on keyboard
Exit setup by typing :
Get date by typing at the shell prompt :
and presto the system time has advanced by 2 hours or
whatever your timezone is.
It sounds like an interaction between the kernel and the APM
BIOS - most likely because the kernel is set that
'hardware clock is in GMT'. Change the kernel setting and
try recompiling the kernel.