Thanks for this additional information. Can you please run: $ sudo strace -v -s 999 -f -e trace=execve update-manager 2> /tmp/u-m.log
and attach the file /tmp/u-m.log to this bugreport? Thanks, Michael -- Update-manager does NOT download nor install softwares https://launchpad.net/bugs/70033 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs