Jochen,

On Wednesday 13 August 2008, Jochen Roderburg wrote:
> >> > Windows networking works also with Samba shares on Linux systems (the
> >> > VM host and another one), I can read and write there without problems.
> >> >
> >> > But I have a strange problem with shares on another (non-virtual)
> >> > Windows XP machine. Reading from the shares is ok, but when I try to
> >
> > Your WinXP guest is reading a share from another machine running WinXP
> > as well, is that right?
>
> Actually it is a Win2000 guest, and yes, it can read the shares on the
> other native XP machine fine, problem occurs only on writing to the XP
> share.

What Linux host is that (kernel version)?

Strange. I assume there is nothing in the VBox.log file? Is the
connection to the outside broken after your started writing to
the share? And does it remain broken or can you restore the
connection by some activity?

> > What network card did you select, the default one (PCNet)?
>
> I started with the PCNet card, the only one available in earlier
> versions. Meanwhile I have also tried the Intel/PRO (with original
> Windows drivers from Intel) with the same result.
> I have also tried the NAT variant (with both emulated netcards), and
> in this mode all the reported problems do not happen. But I found that
> the NAT mode is also noticeably slower (about 50% of the bridged mode).

Right, NAT is much slower, this is a known problem. Even more strange
is that NAT is working but not the host interface.

> > We normally don't see such kind of problems. I assume your WinXP guest
> > is well patched? Do you experience some other instabilities apart from
> > the network problems?
>
> Meanwhile all current MS patches applied (via the NAT mode  ;-)
> No instabilities except occasional hangs of the VM during shutdown.

Do you have VT-x / AMD-V enabled for your VM? Please check your
VM session information window (if the mode cannot be used we silently
fall back to the raw mode).

Kind regards,

Frank
-- 
Dr.-Ing. Frank Mehnert    Sun Microsystems    http://www.sun.com/

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