Samba 2.0.x (2.0.10) has functionality that is missing from the Samba 2.2.x
releases, one of which is an operational "share modes" directive.
According to the Samba mailing lists, there isn't a way in 2.2.x to do
what "share modes = No" did in 2.0.x, so revive an older, stable release
of Samba that does contain the missing functionality. Setting the share
mode on a service is necessary only to get certain legacy MS-DOS
applications working in a multi-user environment.