Thanks for you answer. I removed /etc/passwd.lock, /etc/shadow.lock files and re-configured the ntp package. The workaround works fine. It seems that the problem is similar as you observed in the another package.
-- NTP services installation crashes https://bugs.launchpad.net/bugs/479493 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs