From the collection of files at http://www.wuala.com/grahamperrin/publi ... de=gallery

Also remarkable during that period:
- as seen occasionally with other file systems, the volume was missing from the Computer level in Finder
- for both files, document content was not previewed in the preview column of Finder.
I worked around by an unmount then mount of the affected file system, then reproduced the known limitation that affects permanent version storage for some users.