I just began seeing similar behaviour on a Windows7 PC with samba mounts.
I am running uwin 4.5, and the problems started with the last automatic
update of Windows.  The main server is running CentOS 6.2 and the latest
Samba package.  I don't have any Novell mounts.

A second problem not mentioned by Richard is that until the update, I could
mount.cifs a folder on the Windows system as r/w on the CentOS system, and
could create and modify files on the cifs mount.  The last update
eliminated the writeability; I can still see the files from CentOS, but
they are read-only and cannot be written or touched.

Metta,
Ivan

On Mon, Apr 2, 2012 at 04:57, Richard Kunz <[email protected]> wrote:

>  We tested UWIN version 4.5 and 5.0 on a Windows 7 (Enterprise) PC
> running SP1 and Novell Client 2 (SP1) and found that neither version of
> UWIN can access files stored on our Novell fileserver (running Netware
> v6.5). An "ls -al" of a folder located on a mapped network drive reports 0
> (zero) as the size of all files. Copying such a file (using KSH) from the
> Novell mapped network drive creates a zero size file under UWIN's /home
> folder. However, Windows' 7 native file manager (Windows Explorer) is able
> to successfully copy the same file.
>
> We also tested UWIN v5.0 on a Windows XP PC running SP3 and Novell Client
> 4.91 (SP3) and were able to successfully copy a file (using KSH) from the
> Novell mapped network drive to /home. However, Perl (2009-12-18) seems
> incompatible with UWIN 5.0 (it won't install as a UWIN 4.x install
> directory is not present in the PC's registry). When will an updated
> version of PERL, which is compatible with UWIN 5, be made available?
>
> Under Windows 7, we then tried running KSH in Windows compatibility mode
> (as XP with SP3 and as Administrator) as a possible solution. This did not
> solve the problem and made KSH highly unstable (KSH would close/exit for no
> reason). We even tried running the UWIN Master Service (UMS.EXE) in XP
> (SP3) compatibility mode. Again, this did not solve our problem.
>
> We tried running UWIN v4.5 in Windows XP mode v1.3.76 (Windows Virtual PC)
> on our Windows 7 (Enterprise) machine and were able to successfully
> copy files off our Novell fileserver in KSH. We also tested UWIN v4.5 in
> VMware Player and again had no problems accessing our Novell fileserver. To
> date, the only issue we have running UWIN in a virtual XP environment
> (besides performance/speed issues) is that Perl scripts do not work.
> Running a Perl script exits with "Cannot execute [unknown error 14001]".
>
>  UWIN's (v5.0) inability to "see" Novell mapped network drives in
> Windows 7 is a major problem for us. We have developed 1000's of lines of
> KSH scripting in Windows XP (UWIN 4.5) to "automate" climate change
> research, which we cannot migrate to Windows 7.
>
> Any feedback from the UWIN user base would be gratefully appreciated.
>
> Many thanks, Richard.
>
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-- 
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html
Army Signal Corps:  Cu Chi, Class of '70
Author:  Teach Yourself Python in 24 Hours
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