I think (I hope), I have found the reason. It was apparmor. Maybe, there were profile updates in the past?!
I did the following: $ sudo aa-complain rpcbind $ sudo service rpcbind restart $ sudo service ypbind restart $ yptest was ok and gave me the list of all users, groups and others $ ls -l /net/remote-machine/remote-share/.... was ok and gave me the list of all files and directories, which fails in the last week! $ sudo mount remote-host:/remote-share /mnt does not give me any error message All in all: Looks good. By the way: In 10.04 the logs were much better. Since the introduction of unity, most logfiles (e.g. /var/log/messages) are empty and the remaining logs - I think - are much less informative. Regards, Ralf -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1007293 Title: nis doesn't work anymore after upgrade to 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rpcbind/+bug/1007293/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs