The culprit is udev. udev runs "ifup" when it founds eth0, then ifup starts dhclient3 and restarts sshd!
Temporary fix to this: - Remove "auto eth0" from /etc/network/interfaces - Add "/sbin/ifup eth0" to /etc/rc.local (before "exit 0", of course) Now only udev has the strange signal mask on my machine. -- sshd zombie processes and strange behavior after karmic upgrade https://bugs.launchpad.net/bugs/407428 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