/etc/idmapd.conf looks like this at the moment. (I've also tried with Domain set to another value, or with domain commented out so that imapd can assign a default automatically, which is the default in the version of nfs-utils that ships in 12.04)
[General]
Verbosity = 5 Pipefs-Directory = /var/lib/nfs/rpc_pipefs Domain = localdomain
[Mapping]
Nobody-User = nobody Nobody-Group = nogroup
[Translation]
Method = nsswitch
/etc/idmapd.conf looks like this at the moment. (I've also tried with Domain set to another value, or with domain commented out so that imapd can assign a default automatically, which is the default in the version of nfs-utils that ships in 12.04)
[General]
Verbosity = 5 nfs/rpc_ pipefs
Pipefs-Directory = /var/lib/
Domain = localdomain
[Mapping]
Nobody-User = nobody
Nobody-Group = nogroup
[Translation]
Method = nsswitch