I have checked the partitions for similarities, but found nothing: they range from 700 MB to 2 GB, from one single top level folder to a dozen or so, from almost full to half empty.
I tried rebuilding the desktop file, zapped the invisible AppleShare files and folders, reinstalled System software, started with a minimal extension set, tried with OS 8.6 and 9.0, all with no success.
This is really weird and I remember that file sharing worked on a partition where it now refuses to work several weeks ago, but there is *nothing* major that I changed since then.
As this seems to be a rather common problem, I wonder what else I could do (besides reformatting the whole disc)?.
Thanks for your suggestions anyway!
[This message has been edited by Carbon (edited 12-13-1999).]