[Samba] Final problems in the samba

[Osni Passos]

In a domain PDC Samba the following problems exist:
1-The script of netlogon is not loaded with login (exactly configured and
its respctivas folders and archives they exist and they are with permission
777, view smb.conf) scripts is being loaded manually.Anybody know why?
2-After the user if to login in, when it try acess any folder in
the server the Samba asks user and password again, (the
same ones of login) Exists way to prevent this?
3-Sometimes when need access some folders of the server (any one),
returns the following message:  "the net way was not found" after some
minutes it (changes) comes back to the normal.Anybody know why?
4-Some folders is delayed to open and others (the same size) do not.
Anybody know why?

Sorry about my English

Ufa!

Connectiva 8,0
Samba 2,2,7
W2k Stations incapacitated criptografia.

It follows below smb.conf:

[global]
workgroup = MEDITEc
server string = Meditec Server %v
hosts allow = 192.168.0. 127.
printcap name = /etc/printcap
load printers = yes
printing = lprng
;guest account = root
log file = /var/log/samba/log-%U.%m
max log size = 5000
debug level = 1
security = user
;password server = 
password level = 8
username level = 8
encrypt passwords = no
smb passwd file = /etc/smbpasswd
unix password sync = Yes
passwd program = /usr/bin/passwd %u
passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n
*passwd:*all*authentication*tokens*updated*successfully*
username map = /etc/smbusers
;include = /etc/smb.conf.%m
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
;interfaces = 192.168.12.2/24 192.168.13.2/24
;remote browse sync = 192.168.3.25 192.168.5.255
;remote announce = 192.168.1.255 192.168.2.44
local master = yes
os level = 99
domain master = yes
preferred master = yes
;domain controller = 
domain logons = yes
logon script = %U.bat
logon path =
logon home = \\%L\homes
name resolve order = wins lmhosts bcast
wins support = yes
;wins server = w.x.y.z
;wins proxy = yes
dns proxy = no
;unix password sync = yes
netbios name = SERVER
keepalive = 20
;preserve case = no
;short preserve case = no
;default case = lower
;case sensitive = no
;admin users = root, osni
;valid users = osni, teste, andrea, administrador, root
logon drive = T:
;remote browse sync = 192.168.0.255
;remote announce = 192.168.0.255
create mask = 0777
;time server = yes
;domain admin group = root
oplock = false
#============================ Share Definitions
==============================
[homes]
comment = Home Directories
browseable = yes
writable = yes
available = yes
public = yes

[netlogon]
comment = Network Logon Service
path = /home/netlogon
guest ok = yes
writable = yes
browseable = no

[meditec]
comment = meditec
path = /files/med
public = yes
writable = yes
browseable = no

[tox]
comment = tox
path = /files/tox
copy = meditec

[rs]
comment = rs
path = /files/rs
public = yes
writable = yes
browseable = no

[lukra]
comment = lukra
path = /files/lukra
public = yes
writable = yes
browseable = no


[publico]
comment = publico
path = /files/pub
public = yes
writable = yes
browseable = no

[catalog]
comment = catalogos
path = /files/cat
public = yes
writable = yes
browseable = no