Solution or Workaround
When I perform a Clip or Intersect and save the results over a Novell network, I get "error in reading shapetype".
When I try to save edits to a shapefile or a table over a Novell network, I get the error "Attempt to edit read-only vtab".
A known issue with Service Patch 1 of Novell Client 3.1.
Uninstall Novell Client from the PC where ArcView is installed and reinstall it without Service Patch 1.