Problems in simutaneous archives access

[LBS Com . Consultoria e Sistemas Ltda]

Hi All:

        I've been using dosemu for a while, since version 0.98 (I don't
remember which patch level), plus hdimage from Caldera's DR-DOS 7.03.
        Now I'm using dosemu 1.0.0, with the same hdimage, accessing files
from a SAMBA 2.0.6 server mounted with smbmount 2.0.6 at my wokstation.
        A weird thing is happening: Every workstation running dosemu logs
into my samba server as "nobody" and, when two or more workstations tryes
to access a file at same time, there's an error.  Another problem is that when
one workstation write a register into de archive served by samba,  takes a
time until others workstations can access this new register.
        What might be happening?
        I don't think it's a samba problem, because I've disabled the samba's
buffers and when I'm using DOS/WIN it doesn't happens....
        Sorry for mu awful english and thanks in advance for any help. I'm
trying to flush out Windows from my friend's life!!!
 -- 
Lucas do R. B. Brasilino da Silva
LBS Consultoria e Sistemas LTDA - Linux Brasil Sistemas
http://www.lbs.com.br