What is the proper way to update system to the latest release

[Fargo]

I removed virtualbox guest additions with

Code:

sudo apt-get purge virtualbox-guest-*

That did seem to speed things up. I ran the config plymouth commands again to make sure I ran the init. But I still don't have plymouth. But atleast my boot time is improved. That was my biggest issue. But if you have any ideas on Plymouth I'd be happy to give them a try.
Thank you again.