Been running into this problem and it is driving me nuts...was wondering if anyone else experienced it. I apply the latest patch cluster and everything seems all well. I follow the instructions and do a reboot -- -r, but when the system comes back up the output of "uname -a" still shows the old Kernel Revision. Anyone have anything similar to this? There is no errors in my log files..."showrev -p" and "showrev -a" both show the latest, but "uname -a" does not.