Tim,
set the root password on Ubuntu was necessary only for replacement for sudo using sudo-trinity? With 3.5.13.1 this is not necessary. Sudo-trinity is updated, so it serve as a complement to sudo from the system.
You are correct. Setting the root password is no longer needed.
It appears that it is possible to remove the information about the known problem with libart - is also updated. I also propose to remove the instruction to add my PPA.
http://www.trinitydesktop.org/wiki/bin/view/Documentation/UbuntuBinaryInstal...
This all looks good to me!
Tim