Description of problem:

  When starting e.g. the "Wireless Assistant", one is presented with
  a dialog box:

  +------[Query]-----------------------------------+
  | You are attempting to run "wlassistant"        |
  | which requires administrative priviledges, but |
  | more information is needed in order to do so.  |
  |                                                |
  |    Authenticating as "root"                    |
  |                                                |
  | pammount password:  [_____________]            |
  |                          [Cancel] [OK]         |
  +------------------------------------------------+

  The label for the text field is a string handed to userhelper
  from PAM, and, in this case, should read "pam_mount password".

  However, the dialog window uses the underscore character to
  just underscore the following letter "m".

Version-Release number of selected component (if applicable):

  usermode-1.96.1-1.i386

How reproducible:

  Every time.

Steps to Reproduce:
1. Set up /etc/pam.d/system-auth with pam_mount, similar to this:
     auth        required      pam_mount.so
     auth        sufficient    pam_unix.so nullok use_first_pass
2. Click on any Gnome menu entry or launcher which starts
   something requiring admin priviledges.
  
Actual results:

   "pammount password:" with underlined second "m"

Expected results:

   "pam_mount password"

Additional info:

   I would expect the GTK+ toolbox to contain a tool for proper
   escaping of strings.