Hi Artem,
I was some days busy on my job, sorry.
Unfortunately the problem is any longer. In addition I started the recommended update (couse glibc and so on) and I got many errot messages:
Task completed with errors
S91nethserver-directory-init-admin #89 (exit status 28416)
S97nethserver-mail-update-admin #92 (exit status 28416)
S97nethserver-samba-sam-conf #93 (exit status 256)
S04user-create-unix #127 (exit status 28416)
S20nethserver-directory-organization-modify #129 (exit status 28416)
S25nethserver-directory-user-modify #132 (exit status 256)
S30nethserver-mail-account-update #134 (exit status 28416)
S04group-create-unix #143 (exit status 256)
S20group-modify-unix #146 (exit status 28416)
S30nethserver-mail-account-update #147 (exit status 28416)
so that I don't restart the installation owncloud after that.
Your offer to look for yourself via a teamviewer session is heavily welcome