I've been trying to upgrade from samba 3.4.5 to 3.5.x (currently 3.5.3) on a Ubuntu 9.10 system where I compile my own Samba. The server is a PDC for several win2000 clients and uses an LDAP backend hosted on the same machine. After the upgrade, clients can connect to shares but can not perform domain logons. 3.5.3 does not build a browse list of other domains on the subnet. Executing "net view /DOMAIN:mydomain" on the client produces an error 59 or error 64. Log-3 during the net view is basically the same between 3.4.5 and 3.5.3, and I can see both successfully connect, negotiate sign/seal, and authenticate a guest session with LDAP. After that, the working 3.4.5 log says: [2010/05/23 08:33:34, 3] smbd/service.c:1047(make_connection_snum) CLIENT (x.x.x.x) connect to service IPC$ initially as user nobody (uid=65534, gid=65534) (pid 2454) [2010/05/23 08:33:34, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:33:34, 3] smbd/reply.c:759(reply_tcon_and_X) tconX service=IPC$ [2010/05/23 08:33:34, 3] smbd/process.c:1459(process_smb) Transaction 4 of length 129 (0 toread) [2010/05/23 08:33:34, 3] smbd/process.c:1273(switch_message) switch message SMBtrans (pid 2454) conn 0xb9034f58 [2010/05/23 08:33:34, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (65534, 65534) - sec_ctx_stack_ndx = 0 [2010/05/23 08:33:34, 3] smbd/ipc.c:536(handle_trans) trans <\PIPE\LANMAN> data=0 params=33 setup=0 [2010/05/23 08:33:34, 3] smbd/ipc.c:487(named_pipe) named pipe command on <LANMAN> name [2010/05/23 08:33:34, 3] smbd/lanman.c:4694(api_reply) Got API command 104 of form <WrLehDz> <B16BBDz> (tdscnt=0,tpscnt=33,mdrcnt=4200,mprcnt=8) [2010/05/23 08:33:34, 3] smbd/lanman.c:4698(api_reply) Doing NetServerEnum [2010/05/23 08:33:34, 3] smbd/lanman.c:1511(api_RNetServerEnum) NetServerEnum domain = mydomain uLevel=1 counted=1 total=1 [2010/05/23 08:33:34, 3] smbd/process.c:1459(process_smb) Transaction 5 of length 43 (0 toread) [2010/05/23 08:33:34, 3] smbd/process.c:1273(switch_message) switch message SMBulogoffX (pid 2454) conn 0x0 [2010/05/23 08:33:34, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:33:34, 3] smbd/reply.c:1948(reply_ulogoffX) ulogoffX vuid=100 [2010/05/23 08:33:34, 3] smbd/process.c:1459(process_smb) Transaction 6 of length 39 (0 toread) [2010/05/23 08:33:34, 3] smbd/process.c:1273(switch_message) switch message SMBtdis (pid 2454) conn 0xb9034f58 [2010/05/23 08:33:34, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:33:34, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:33:34, 3] smbd/service.c:1226(close_cnum) CLIENT (x.x.x.x) closed connection to service IPC$ [2010/05/23 08:33:34, 3] smbd/connection.c:31(yield_connection) Yielding connection to IPC$ [2010/05/23 08:33:34, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:33:34, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:33:34, 3] smbd/connection.c:31(yield_connection) Yielding connection to [2010/05/23 08:33:34, 3] smbd/server.c:845(exit_server_common) Server exit (failed to receive smb request) where the not-working 3.5.3 says [2010/05/23 08:25:50.455781, 3] smbd/service.c:1069(make_connection_snum) CLIENT (x.x.x.x) connect to service IPC$ initially as user nobody (uid=65534, gid=65534) (pid 2128) [2010/05/23 08:25:50.455844, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:25:50.455914, 3] smbd/reply.c:846(reply_tcon_and_X) tconX service=IPC$ [2010/05/23 08:25:50.458037, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:25:50.458221, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:25:50.458326, 3] smbd/service.c:1250(close_cnum) CLIENT (x.x.x.x) closed connection to service IPC$ [2010/05/23 08:25:50.458394, 3] smbd/connection.c:31(yield_connection) Yielding connection to IPC$ [2010/05/23 08:25:50.458530, 3] smbd/sec_ctx.c:310(set_sec_ctx) setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0 [2010/05/23 08:25:50.458643, 3] smbd/connection.c:31(yield_connection) Yielding connection to [2010/05/23 08:25:50.458869, 3] smbd/server.c:902(exit_server_common) Server exit (failed to receive smb request) [2010/05/23 08:25:50.476063, 3] smbd/server.c:259(remove_child_pid) smbd/server.c:259 Unclean shutdown of pid 2128 [2010/05/23 08:25:50.476423, 1] smbd/server.c:267(remove_child_pid) Scheduled cleanup of brl and lock database after unclean shutdown after which it logs a second sign/seal negotiation, authentication, and failed $IPC connection. smb.conf is [global] unix charset = iso8859-1 workgroup = mydomain server schannel = Yes passdb backend = ldapsam:ldap://x.x.x.x passwd program = /usr/sbin/smbldap-passwd %u passwd chat = *New*password* %n\n *Retype*new*password* %n\n *all*authentication*tokens*updated* client NTLMv2 auth = Yes log level = 1 syslog = 0 log file = /var/log/samba/log.%U name resolve order = hosts lmhosts wins bcast time server = Yes server signing = Yes deadtime = 30 keepalive = 180 socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 printcap name = cups add user script = /usr/sbin/smbldap-useradd -m "%u" -m delete user script = /usr/sbin/smbldap-userdel "%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" add machine script = /usr/sbin/smbldap-useradd -w "%u" logon script = scripts\logon.bat logon path = \\%L\[path] logon drive = z: logon home = \\%L\[home] domain logons = Yes os level = 65 preferred master = Yes domain master = Yes wins support = Yes kernel oplocks = No ldap admin dn = "[----]" ldap machine suffix = ou=machines ldap passwd sync = yes ldap suffix = [----] ldap ssl = no ldap user suffix = ou=People eventlog list = syslog, apache2 idmap uid = 10000-15000 idmap gid = 10000-15000 winbind enum users = Yes winbind enum groups = Yes hosts allow = 127.0.0.0/16, x.x.x.x/25 hosts deny = all