Sabayon 3.4f

Sabayon is Gentoo based so I thought I'd have look at it to try to learn something about gentoo.
I already had an older version of sabayon installed on the Seagate usb HDD so I tried to boot to this from the MacBook.
It booted fine with very few problems.
However, when I checked for updates (in Kudoo), there seemed to be an awful lot of them so I decided to download the latest stable version (3.4f) and clean install this.
The download is big (4.3 GB) but the install didn't take any more than 2 hours.