@alefattorini
For me, according to the yum log, everything was updated:
Mar 05 19:18:40 Updated: nethserver-firewall-base-2.10.3-1.ns6.noarch
Mar 05 19:18:41 Updated: nethserver-firewall-base-ui-2.10.3-1.ns6.noarch
Mar 05 19:18:44 Updated: nethserver-httpd-admin-1.6.3-1.ns6.noarch
Mar 05 19:18:45 Updated: nethserver-httpd-2.5.3-1.ns6.noarch
I was just bringing up the issue that it threw an error/warning during the update in case any post update configuration tasks might not have completed correctly.
Cheers.