[sudo-users] Permissions for pam.d/sudo

[cnelson at nycap.rr.com]

I was a little surprised to discover this in my pam.d directory:

  /etc # ls -l pam.d
  -rw-r--r--    1 root     root          386 Sep 30  2002 login
  -rw-r--r--    1 root     root           44 Sep 27  2002 passwd
  -rwxr-xr-x    1 root     root          445 May 25  2004 sudo

Is there some reason for /etc/pam.d/sudo to be executable or do I have some bad configuration here?