After almost one year I managed, just in these days, to change my Internet provider and have back my land-line ADSL connection. First things first, I started with updating my home desktop computer (the Acer Veriton S661) I left mostly unattended during this period since my mobile Internet contract was barely enough for daily connectivity needs. Unfortunately it seems my computer has been left too much without upgrading and the update process halted signaling many “404” errors while accessing to different repository locations. May be I could find another solution to upgrade my system but, since I usually keep the “/home/” folder on a separate partition, I decided to go for a complete re-installation of latest Ubuntu-Gnome release.
The installation process
I proceeded with installing as usual, prepared a USB disk with Ubuntu's tool, booted from it and went on with installing. On order to maintain my separate home partition I selected the custom “Something else” installation type
then I selected the root partition, marked it to be formatted, and the home partition (without formatting if of course) using the disk partitioning tool.
In a few minutes I had the upgraded system ready for rebooting.
At the first run the new system took most of Gnome-Shell extensions configurations from my home folder. I only had to go to the Gnome-Shell extension page to manually upgrade a handful of shell extensions and I had back my usual desktop look.
Now I just have to install all application I use, most of them will take old configuration from my home folder without problems.