Some how after I upgraded from RH5.2 to RH6.0 my system clock got set back several hours. I did not notice this until I tried to add a printer and had problems. Then when I tried to recompile the kernel I got time errors in the form of 91919191 > 9099999 the file date is greater than the system date. I also got "time skew error". It was not until I was in AfterStep when I looked at the time and it was 8pm but the time said it was 2pm. I then changed my system clock using the time machine, and all has been fine since. My only guess is that somehow during the installation the clock got skewed back in time. I did notice that while compiling hte kernel there was a parameter that refered to setting the system clock to am only or something. I think this was in the APM. It was checked. As I do not use the APM I unchecked that entire section.
This was caused by a problem with the apmd package. This should be fixed with the errata package obtainable from our errata section at http://support.redhat.com. If this does not help then please reopen this bug.