I've enabled apache dav module on my site and configured digest authentication for it.
Now i'm trying to connect windows drive to it. Command follows:

```
net use z: http://dav.mysite.com/Files /user:username *

```

then it asks for password. After that drive appears to be connected except for one detail. In server logs I can see strange 401 errors:

```
xx.xx.xx.xx - - [22/Mar/2011:23:05:04 +0000] "PROPFIND /Files HTTP/1.0" 401 751
xx.xx.xx.xx - username [22/Mar/2011:23:05:04 +0000] "PROPFIND /Files HTTP/1.0" 301 495
xx.xx.xx.xx - - [22/Mar/2011:23:05:04 +0000] "PROPFIND /Files/ HTTP/1.0" 401 751
xx.xx.xx.xx - username [22/Mar/2011:23:05:04 +0000] "PROPFIND /Files/ HTTP/1.0" 207 1175
xx.xx.xx.xx - - [22/Mar/2011:23:05:07 +0000] "PROPFIND /Files HTTP/1.0" 401 751
xx.xx.xx.xx - username [22/Mar/2011:23:05:07 +0000] "PROPFIND /Files HTTP/1.0" 301 495
xx.xx.xx.xx - - [22/Mar/2011:23:05:07 +0000] "PROPFIND /Files/ HTTP/1.0" 401 751
xx.xx.xx.xx - username [22/Mar/2011:23:05:07 +0000] "PROPFIND /Files/ HTTP/1.0" 207 1175

```

As you can see for any proper digest authenticated request it sends one wrong request

My apache config:

```
<VirtualHost xx.xx.xx.xx:80>
        ServerAdmin webmaster@dav.mysite.com
        ServerName dav.dav.mysite.com
        DocumentRoot /var/www/dav.mysite.com/
        UseCanonicalName Off

        Alias /Files "/var/www/dav.mysite.com/"

        BrowserMatch "Microsoft Data Access Internet Publishing Provider" redirect-carefully
        BrowserMatch "MS FrontPage" redirect-carefully
        BrowserMatch "^WebDrive" redirect-carefully
        BrowserMatch "^WebDAVFS/1.[0123]" redirect-carefully
        BrowserMatch "^gnome-vfs/1.0" redirect-carefully
        BrowserMatch "^XML Spy" redirect-carefully
        BrowserMatch "^Dreamweaver-WebDAV-SCM1" redirect-carefully
        BrowserMatch "MSIE" AuthDigestEnableQueryStringHack=On

        <Directory "/var/www/dav.mysite.com">
                Dav On
                Order allow,deny
                Allow from all
                AuthType Digest
                AuthName "DAV-upload"
                AuthDigestDomain /Files/
                AuthDigestProvider file
                AuthUserFile /var/www/webdav.passwd
                Require valid-user
        </Directory>

        # Possible values include: debug, info, notice, warn, error, crit,
        # alert, emerg.
        LogLevel error
        ErrorLog /var/log/apache2/dav.dav.mysite.com-error.log
        CustomLog /var/log/apache2/dav.dav.mysite.com.log common
        ServerSignature Off
</VirtualHost>

```

And it works very-very slowly.
Why do you think it sends requests without authentiocation?
BTW other webdav clients work properly

P.S. nginx is sitting in front of apache and passing ALL the traffic to it