broken package in Synaptic

[Albert Wagner]

I recently upgraded from 10.04 to 10.10 (actual upgrade, not new install).
I have 3 machines on a local wireless and was attempting to set up 
simple file sharing.
System->Preferences->Personal File Sharing
"This feature cannot be enabled because the required packages are not 
installed on your system"

It made no indication just what the required packages were. So I guessed.

I thought that perhaps reinstalling "gnome-user-share 2.30.0" in 
Synaptic might help, however,
that yielded:
E: man-db: subprocess installed post-installation script killed by 
signal (Segmentation fault)
E: samba: subprocess installed post-installation script killed by signal 
(Segmentation fault)
E: libpam-smbpass: subprocess installed post-installation script 
returned error exit status 139

Is this a known artifact of the upgrade?  I hesitate to file a bug 
report because I have usually done something stupid.