bug#3542: 23.0.94; File access via UNC path slow again under Windows

[Mathias Dahl <mathias.dahl@gmail.com>]

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug@gnu.org mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

1. Start emacs with -Q
2. Open a directory or file by entering its UNC path (e.g. C-x C-f
//server/share/folder/file.txt RET).
3. Notice it is very slow to get it to open.

I reported this before Emacs 21 or 22 was released, and it was fixed
then. In the latest two pretests the problem is now back. Working with
UNC paths is now almost unusable - I have to wait several seconds to
open a file or get a file listing in Dired.

Thanks!

/Mathias

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
e:/dat/dl/emacs-23.0.94/etc/DEBUG for instructions.


In GNU Emacs 23.0.94.1 (i386-mingw-nt5.1.2600)
 of 2009-05-24 on SOFT-MJASON
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4)'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: SVE
  value of $XMODIFIERS: nil
  locale-coding-system: cp1252
  default-enable-multibyte-characters: t

Major mode: Dired by name

Minor modes in effect:
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-x C-f / / g b g f s 1 / a r <tab> 7 5 <tab> d o c
m a n <return> <return> <return> <down> <down> <down>
<return> <help-echo> M-x v e r s <tab> <return> <help-echo>
<help-echo> <help-echo> <help-echo> <menu-bar> <help-menu>
<send-emacs-bug-report>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
GNU Emacs 23.0.94.1 (i386-mingw-nt5.1.2600) of 2009-05-24 on SOFT-MJASON