I once had such problem with a list. You can search this list for more infos
about this one (thread name was "Mailman 2.1.1 crashing when approving a new
member"). It looks like a deep bug somewhere between Python and Mailman.
In my case, I noticed that it happened only when the list name contains
; <[EMAIL PROTECTED]>
Sent: Wednesday, August 13, 2003 10:38 AM
Subject: RE: [Mailman-Users] using the web interface to confirm subscription
> I once had such problem with a list. You can search this list for more
infos
> about this one (thread name was "Mailman 2.1.1 crashing w