[Samba] can not logon on windows after sometime

[Adam Williams]

what version of samba?  what version of openldap?  what errors are you 
getting in /var/log/samba/* when you try to log in?

Mohammad Reza Hosseini wrote:
> we are using samba on CentOS 5 with LDAP backend as a PDC. the problem is
> that after some times users can not logon to win XP clients and we must
> rejoin the clients to the domian so that users logon will be possible but
> again after some random time logon is not possible. any idea?
> thanks.
>