Hi There

I administer 2 relatively new installations for a customer on Ubuntu 12.04.2 LTS with Zimbra 8.0.4_GA_5737 Network Edition.

There are package & security updates available for Ubuntu. I would like to install these updates (I'm not looking to update Zimbra itself at this point - simply the Ubuntu packages). I would obviously prefer to avoid breaking the Zimbra installation

Would an apt-get update followed by an apt-get upgrade and a reboot if required be safe?

Can anyone guide me in how I should proceed in this regard?