samba - Feb 2005 - Error:The semaphore timeout period has expired

hi,
I hv recently installed and configured samba-3.0.10-1 with Ldap and smb
tools.
Everything looks good, i mean Samba, LDAP and smbldaptools everything.

But now when i am trying to access the shares as well as trying to join w2k
prof desktop to the domain its giving the error "The semaphore timeout
period has expired"

Can any one let me know what could be the problem?

Thanks & Regards
Mandar Kulkarni