Is a restart REALLY required after an upgrade?

[Gary W. Swearingen]

"Craig Hagerman" <craighagerman at gmail.com> writes:

> someone tell me - do I REALLY have to restart the machine after an
> upgrade? and if so why?

I'll guess that you need to reboot to restart the many running
low-level daemons that might have been upgraded.  (Unless you want to
restart them each by hand.)  Same story for kernel modules, and the
kernel itself, if upgraded.