Robert Heller wrote: > At Thu, 09 Apr 2009 07:49:30 -0400 CentOS mailing list <centos at centos.org> wrote: > >> What is the rule of thumb for reboots after updates... >> >> Certainly if I update from 5.2 to 5.3 I reboot. >> >> But if you update something like krb5 or pam >> does that require a reboot? Does the "fix" get automatically loaded and used >> or do you just do a reboot always? > > You only *really* need to reboot if/when you update the kernel. Yum/RPM > takes care of restarting daemons, etc. during the update process. This > is NOT MS-Windows.... Yes, but any program that is already running will keep using the old versions of the program, libraries, open files, etc., retaining the disk space and not sharing the in-memory copy with new instances that start after the update. And since modern programs like to dynamically load library modules as needed while running you can get a strange mix of old/new versions running at once. -- Les Mikesell lesmikesell at gmail.com