Please excuse a possibly dumb question. Prior to the release of CentOS 5.4 I believe two updated 5.4 kernels were released as part of 5.3 2.6.18-164.el5 and 2.6.18-164.2.1.el5 Now that 5.4 is released we have just the 2.6.18-164.el5 kernel. Now the dumb question - what happened to the updated kernel? I now have workstations running 5.4 with the 164.2.1.el5 as they get yum update run regularly, however I do not reboot my servers as often and now find these do not have the later kernel. If some kind soul would please enlighten me..... Rob