I have a number of boxes running 2.6.17-1.2142_FC4 i have two specifiaclly 2.6.17-1.2142_FC4smp #1 SMP Tue Jul 11 22:57:02 EDT 2006 i686 athlon i386 GNU/Linux i have two that are simularly configured and both the clocks keep running fast. ( like minutes every hour) one boot with kernel /vmlinuz-2.6.17-1.2142_FC4smp ro root=/dev/md2 and the other kernel /vmlinuz-2.6.17-1.2142_FC4smp ro root=/dev/md3 no_timer_check Thanks for any help on how to correct this Randy