Sorry if something wrong with this question - i'm pretty new in the field... But i really need some help or link... I have strange problem: Linux by Fedora 3 with latest updates Samba 3.0.14a LDAP 2.2.13 idealix small 10-users server without any security needs. 2 users of them sometimes fail to login and in nt user manager when i try to open them i get the message "The username could not be found". Then even restart of the server does not help to release them from this koma. After time (hours, day or two) they begin to respond without any action from me. here is the smb.conf, but log level = 10 log is too ig to put here (its about 6000 lines for this incident) - i can send it by e-mail [global] workgroup = AVRH netbios name = SERVER enable privileges = yes interfaces = 192.168.1.254 username map = /etc/samba/smbusers server string = Server security = user encrypt passwords = Yes obey pam restrictions = No ldap passwd sync = Yes log level = 10 syslog = 1 log file = /var/log/samba/%m.log max log size = 1000000 time server = Yes socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 mangling method = hash2 map acl inherit = yes nt acl support=yes acl compatibility = auto inherit acls = yes template homedir = /data/domain/users/%U lock directory = /data/organisation/sambalocks logon script = U%.bat logon drive = U: logon home = \\server\homes\%U logon path = \\server\profiles\%U domain logons = Yes os level = 65 preferred master = Yes domain master = Yes wins support = Yes passdb backend = ldapsam:ldap://127.0.0.1/ ldap admin dn = cn=samba,ou=DSA,dc=avrh,dc=com ldap suffix = dc=avrh,dc=com ldap group suffix = ou=Groups ldap user suffix = ou=Users ldap machine suffix = ou=Computers ldap idmap suffix = ou=Users add user script = /usr/sbin/smbldap-useradd -m "%u" ldap delete dn = Yes delete user script = /usr/sbin/smbldap-userdel "%u" add machine script = /usr/sbin/smbldap-useradd -w "%u" add group script = /usr/sbin/smbldap-groupadd -p "%g" delete group script = /usr/sbin/smbldap-groupdel "%g" add user to group script = /usr/sbin/smbldap-groupmod -m "%u" "%g" delete user from group script = /usr/sbin/smbldap-groupmod -x "%u" "%g" set primary group script = /usr/sbin/smbldap-usermod -g "%g" "%u" # printers configuration printer admin = @"Print Operators" load printers = Yes create mask = 0666 directory mask = 0777 nt acl support = No printing = cups printcap name = cups deadtime = 10 guest account = root map to guest = Bad User dont descend = /proc,/dev,/etc,/lib,/lost+found,/initrd show add printer wizard = yes ; to maintain capital letters in shortcuts in any of the profile folders: preserve case = yes short preserve case = yes case sensitive = no use client driver = Yes idmap uid = 16777216-33554431 idmap gid = 16777216-33554431 template shell = /bin/false winbind use default domain = no [homes] path = /data/domain/users comment = Storage of %U, %u read only = No create mask = 0666 directory mask = 0777 browseable = no I'll very appreciate any help.