samba - Oct 2011 - bdc denies a user permission to write when accessing from a workstation

hello everybody

I am hoping someone could share on this, weir to me looking 
situation, some thoughts
when a user accesses BDC share from a workstation writes are 
denied
but this same user can, tested with smbclient, write locally 
and from the PDC

and another thing is when smbclient -L PDC it gets list of 
workstation members too, but not on BDC, would it matter?

thanks
Pawe?