How do you know when a reboot is required after yum update?

[Patrick O'Callaghan]

On Fri, 2009-07-03 at 02:44 -0400, Raman Gupta wrote:
> Depending on the process, a service or application restart may be
> enough, or if X/Gnome/KDE files have been updated, a restart of the X
> server may be required. I think the only times I have ever required a
> total reboot are kernel updates.

I reboot on updates of libc, which is used by virtually every process.
Also, as long as you're not running a server, it's often easier and
faster to reboot if you aren't sure.

poc