If some share has not-public status (public=no), list of valid users contains
unix group (valid users = @somegroup) and this group name consisits of numbers -
user of this group can not connest to this share with "system error 5"
After renaming group to start from any letter and correcting smb.conf the
problem has gone...
please attach a gipzzed level 10 debug log from smbd
of the failure. Thanks.
closing. no response.