[Samba] File corruption with two Samba servers

[Milos Rancic]

I have two samba servers. One is "a proxy" for another; i.e. windows
clients access to the first via the second. When i copy a file from
"proxy" to the destination server via samba, everything is OK.
However, when Windows (XP) users copy, let's say a word document, file
becomes corrupted (probably, binary file is converted in 7-bit file,
but i am not sure).

Destination samba is 3.4 on 32bit Debian Sid with kernel 2.3.31 and
"proxy" samba is 3.3 on 64bit Debian Sid with kernel 2.6.26. Samba
configurations are very plain (after Debian defaults):

* Destination *
[storage]
        comment = storage 1
        path = /storage
        read only = no
        hosts allow = 10.0.0.0/24
        public = yes
        writable = yes
        browseable = no

* Proxy *
[archive]
        comment = archived material
        path = /srv/archive
        read only = no
        hosts allow = 10.0.0.0/24
        public = yes
        writable = yes
        browseable = yes