Open a terminal and type:
sudo apt-get upgrade
Reboot when it tells you it’s done. Problem solved.
Ubuntu, specifically has LTS (Long Term Support) versions that will be patched regularly for a few years as part of their efforts to provide stable OS platforms. I’ve been using 12.04 for a year and I love it. I’m moving to 13.10 on some of my servers, but 12.04 is stable and safe.
So 12.04 works with the latest and greatest laptops with raid0 SSD and 3 monitors?