I must have missed my happy pills for today, or else you guys are smokin' something. If it's a 401 that means that the surfer has failed authentication. Some of the situations might be...
* An active member that has mistyped their password
* An expired member who attempts to login (and of course fails)
* A confused guest who might think that the "members" link is a how-to-join tour or the actual join page
Why on earth would you want to push these people away?? Looks like you mistyped your pass, here's a popunder and some free galleries!
Your 401 page should have at the minimum a link to the members area (to try again), the join page (to rejoin) and the tour.