[Zope] form-based authentication

[D. Rick Anderson]

Ok. I need to find a good replacement for GUF. We're up around 3000 
users, and GUF is gagging pretty bad. I've been messing with 
exUserFolder, but untill there's better documentation on how to get it 
to authenticate from your own source, I'll have to look elsewhere 
(unless somebody out there knows of a good howto).

I played with SimpleUserFolder, and it works, but doesn't have any 
method for form-based auth that I could figure out. I tried 
LoginManager, but every time I install it, my Zope server (2.6.2) 
crashes. I've burned almost 2 days on this and now they're putting some 
pressure on me to get this working.

so ... is there:
A) better documentation on one of the previously mentioned products so 
as to make it work correctly?

B) some other product that can do this?

I'm authenticating off of an Oracle Database with GUF, and I need that 
ability in whatever is used to replace it.

TIA

Rick