I can confirm that this is still a problem on 13.04. I have noticed it affecting:
ping ssh ntp I fix by using the following line in /etc/nsswitch.conf: hosts: files dns -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/94940 Title: mdns listed in nsswitch.conf causes excessive time for dns lookups To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/94940/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs