[Bug 36865] Can't build index for man pages

[Thag]

Public bug reported:
https://launchpad.net/malone/bugs/36865

Affects: kdebase khelpcenter (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
I pulled up help, hit "build search index", selected "app manuals", then hit "build index". It returned immediately, I clicked the "details" button on the search index result box" and the htdig command had failed. 
I looked for it and it was not installed.
I apt-get'ed htdig and retried the same procedure.
This time it ran for a bit longer and came back with:

INDEXDIR: /users/bedge/.kde/share/apps/khelpcenter/index/
Creating index for 'kde_application_manuals'
FINDCMD: find /usr/share/doc/kde/HTML/en/ -name index.docbook
Warning: unknown locale!

New server: users, 80
Unknown host: users
0:0:0:file://users/bedge/.kde/share/apps/khelpcenter/index/kde_application_manuals.tmp/index.html: ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- size = 18219
htdig: Run complete
htdig: 1 server seen:
htdig:     users:80 1 document
Finished successfully.

There is no host "users". My UID's group is users, but there is no such
host.

This is a dapper flight 5 install.