[CentOS] restart after yum update (6.6)?

Thu Jan 15 19:36:22 UTC 2015
Mateusz Guz <Mateusz.Guz at itworks.pl>


according to this :


i should reboot my server after updating packages i.e: kernel, glibc, libc.
Maybe it's a silly question, but Is it necessary if I don't use graphical environment ? (and don't want to use the latest kernel yet)