Bug in Debian Mailman 2.1.4

[Struis]

There are several ways to get a bugreport from Mailman
on Debian Linux testing.

The easiest is going to listinfo/<listname>. Fill in a
non-existent e-mail address in the last field
(unsubscribe) like: <email address hidden>, and this is the reply:

Bug in Mailman version 2.1.4

We're sorry, we hit a bug!

If you would like to help us identify the problem,
please email a copy of this page to the webmaster for
this site with a description of what happened. Thanks!
Traceback:

Traceback (most recent call last):
  File "/usr/local/mailman/scripts/driver", line 87, in
run_main
    main()
  File "/usr/local/mailman/Mailman/Cgi/options.py",
line 226, in main
    password, user):
  File "/usr/local/mailman/Mailman/SecurityManager.py",
line 220, in WebAuthenticate
    ok = self.CheckCookie(ac, user)
  File "/usr/local/mailman/Mailman/SecurityManager.py",
line 300, in CheckCookie
    ok = self.__checkone(c, authcontext, user)
  File "/usr/local/mailman/Mailman/SecurityManager.py",
line 310, in __checkone
    key, secret = self.AuthContextInfo(authcontext, user)
  File "/usr/local/mailman/Mailman/SecurityManager.py",
line 105, in AuthContextInfo
    secret = self.getMemberPassword(user)
  File
"/usr/local/mailman/Mailman/OldStyleMemberships.py",
line 102, in getMemberPassword
    raise Errors.NotAMemberError, member
NotAMemberError: <email address hidden>

There are more ways to get these pages:

 When using discard_these_nonmembers with non-existent
e-mail addresses, the same error page is presented.

Are these bugs already known / solved, or are there
workarounds for them?

Best Regards,

Bas van Schooten.

[http://sourceforge.net/tracker/index.php?func=detail&aid=985846&group_id=103&atid=100103]