You might be able to get some info out of the contents in 
/proc/fs/cifs/.  Does nautilus actually mount the filesystem somewhere, 
or is it using smbclient and friends to make it appear as such?  CIFS is 
actually quite different from SMB once you start digging into it.

Also, a newer samba might help.  I'd recommend checking out sernet-samba 
(http://enterprisesamba.org/index.php?id=54).
It's a build of newer samba versions against various enterprise linux 
distributions, including RHEL.  I had to upgrade a few of our servers so 
they could properly authenticate to a Win 2008 server.

Cheers,
Mark

Julian Klein wrote:
> Thank you very much for your suggestions!
>
> Unfortunately, nfs is not an option. One of my two NAS (the Netgear) 
> supports nfs, but I found out, that if I bind writing rights to some 
> IPs of my subnet, it's working with that device.
>
> Unfortunately the kernel, of the other device, does not support nfs. 
> There's a community-build kernel supporting this, but I do not have 
> enough confidence in my linux knowledge to change the kernel.
>
> But I am confused what's the difference between mounting a share (via 
> mount -t ... or editing the fstab) and accessing the share with 
> nautilus (smb:[log in to unmask])?
> I always thought, that cifs is the newer version of smb and that there 
> aren't many differences.
> When I am looking for mounted devices (mount or df) I don't get 
> anything about the shares, which are accessed via nautilus - so they 
> are not mounted!?
>
>


-- 
Mr. Mark V. Stodola
Digital Systems Engineer

National Electrostatics Corp.
P.O. Box 620310
Middleton, WI 53562-0310 USA
Phone: (608) 831-7600
Fax: (608) 831-9591