openssh-server update woes

[Nigel Horne <njh@bandsman.co.uk>]

I'm having difficulties updating openssh-server:

hurd:~# dpkg --configure -a
Setting up openssh-server (1:5.1p1-4) ...
PRNG is not seeded
invoke-rc.d: initscript ssh, action "restart" failed.
dpkg: error processing openssh-server (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 openssh-server
hurd:~#

Any ideas?

-Nigel