Comment 9 for bug 509734

I've had nscd installed since before I noticed this problem. So that didn't work for me. My nscd configuration is the Ubuntu default:

#
# /etc/nscd.conf
#
# An example Name Service Cache config file. This file is needed by nscd.
#
# Legal entries are:
#
# logfile <file>
# debug-level <level>
# threads <initial #threads to use>
# max-threads <maximum #threads to use>
# server-user <user to run server as instead of root>
# server-user is ignored if nscd is started with -S parameters
# stat-user <user who is allowed to request statistics>
# reload-count unlimited|<number>
# paranoia <yes|no>
# restart-interval <time in seconds>
#
# enable-cache <service> <yes|no>
# positive-time-to-live <service> <time in seconds>
# negative-time-to-live <service> <time in seconds>
# suggested-size <service> <prime number>
# check-files <service> <yes|no>
# persistent <service> <yes|no>
# shared <service> <yes|no>
# max-db-size <service> <number bytes>
# auto-propagate <service> <yes|no>
#
# Currently supported cache names (services): passwd, group, hosts, services
#

# logfile /var/log/nscd.log
# threads 4
# max-threads 32
# server-user nobody
# stat-user somebody
        debug-level 0
# reload-count 5
        paranoia no
# restart-interval 3600

        enable-cache passwd yes
        positive-time-to-live passwd 600
        negative-time-to-live passwd 20
        suggested-size passwd 211
        check-files passwd yes
        persistent passwd yes
        shared passwd yes
        max-db-size passwd 33554432
        auto-propagate passwd yes

        enable-cache group yes
        positive-time-to-live group 3600
        negative-time-to-live group 60
        suggested-size group 211
        check-files group yes
        persistent group yes
        shared group yes
        max-db-size group 33554432
        auto-propagate group yes

# hosts caching is broken with gethostby* calls, hence is now disabled
# per default. See /usr/share/doc/nscd/NEWS.Debian.
        enable-cache hosts no
        positive-time-to-live hosts 3600
        negative-time-to-live hosts 20
        suggested-size hosts 211
        check-files hosts yes
        persistent hosts yes
        shared hosts yes
        max-db-size hosts 33554432

        enable-cache services yes
        positive-time-to-live services 28800
        negative-time-to-live services 20
        suggested-size services 211
        check-files services yes
        persistent services yes
        shared services yes
        max-db-size services 33554432