mod_auth-any/5241: .htaccess asks for the user's password twice

[Ollie Cook <o....@etoncollege.org.uk>]

>Number:         5241
>Category:       mod_auth-any
>Synopsis:       .htaccess asks for the user's password twice
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Wed Nov  3 10:00:05 PST 1999
>Last-Modified:
>Originator:     o.cook@etoncollege.org.uk
>Organization:
apache
>Release:        1.3.4-9
>Environment:
uname -a: Linux marley.zenox.dhs.org 2.2.5-22 #1 Wed Jun 2 09:17:03 EDT 1999 i686 unknown

Running RedHat 6.0. Apache installed from tarball and linked with PHP3.0.12
>Description:
I am using the following .htaccess file:
---------------------------------------
AuthUserFile /etc/shadow
AuthGroupFile /usr/local/apache/staff
AuthName "Zenox Staff Only"
AuthType Basic

require valid-user
---------------------------

The browser, be it NN or MSIE, always asks the user to input his password twice.
>How-To-Repeat:
You are not in my password file, but recreation of the problem on your system should be easy? Apache is linked with PHP (which is linked with MySQL and gd1.5)
>Fix:
I have not found one yet.
>Audit-Trail:
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