[Samba] Mirgation trouble from PDC Samba 2.2.12 -> PDC Samba 3.0.11

[Pavel Brenev]

I have a trouble with migration of my PDC to new Samba 3.x
First, after migration _some_ machines can`t log in to domain. WinXP 
client says like: computer name not found on Domain Controller.
Also, i see this in samba.logs:

[2005/02/18 09:30:30, 0] rpc_server/srv_netlog_nt.c:get_md4pw(261)
  get_md4pw: Workstation COMP1$: no account in domain

But, COMP1$ really exist: cat /opt/samba/private/smbpasswd |grep COMP1$
comp1$:1177:9807991A11BD82A4596525CFFF67870D:9A882CE1A1883B06196A2B7F1845F3CC:[W          
]:LCT-413435A7:
If i remove this machine from domain, reboot, and after join again - all 
works fine! But...

Second. Real trouble with users profiles. I don`t use roaming profiles 
on my PDC.
On _some_ (again!) machines user profile just "reset". Old (normal) 
profile overwrited by new, clean profile. User lost his "My Documents" 
and all desktop enviroment.
After some hours of work, and reboot, profile _may_ (!) be overwrited 
again (on this machine).
If i log as local user, i see that domain user profile dir _removed_ 
from C:\Documents and Settings\
It is not affects all domain users on this machine, some domain users 
never "lost" their profiles.
I dont have any idea, what is the root of problem :(

Sorry for bad english.

My global section of smb.conf:
[global]
workgroup = spec
server string = Domain Controller (Samba Server)
netbios name = fs

os level = 255

hosts allow = 10.0.0.0/255.255.255.0 10.0.1.0/255.255.255.0 
10.0.2.0/255.255.255.0 10.0.3.0/255.255.255.0 127.
interfaces = eth0

enable privileges = yes


#guest account = nobody

log file = /opt/samba/var/log.%m

max log size = 5000

security = user

encrypt passwords = yes

#domain admin group = @smb_adm

socket options = TCP_NODELAY

local master = yes
domain master = yes
preferred master = yes
domain logons = yes

logon script = logon.bat
logon path =
logon home =
#logon path = \\%L\Profiles\%U

unix charset = koi8-r
dos charset = cp866
display charset = koi8-r


#character set = KOI8-R
#client code page = 866



-- 
Pavel Brenev