I am the upstream maintainer for Alexandria, the root cause of this issue is
documented on the RubyForge Tracker
http://rubyforge.org/tracker/?func=detailatid=863aid=27418group_id=205
Basically, Alexandria needs the 'marc' ruby library to read data over
Z39.50 (ZOOM). Older versions of Ruby/ZOOM
In Alexandria 0.6.5 available on Karmic the Advanced Settings exists in the
Preferences. According to the bundled online help it would allow to add a
Z39.50 provider.
However this checkbox IS DISABLED! Why?
libzoom-ruby is installed, so everything seems to be there to make it work,
isn't it?