Thanks for the feedback gapan I'll start again and check out the package update system. The best part about a new system is exploring the tweaks and improvements developed for it
At my work, on 13.0 Salix Live, using a 2GB persistent file on a USB key with 4GB or RAM.
I use two monitors : one at 1440x900, the other at 1280x1024 (so this is the reason of the black area in the screenshot).