I am using RedHat 6.0.  I first installed the Zope 1.10.3 rpm package for python 1.5.1.  I found that the server ran....the example site popped up, and the quickstart works just fine....but I can not log in to manage zope.  I checked the /var/local/zope/access file, and edited it correctly, then restarted /etc/rc.d/init.d/zope.  I checked permissions on it. Everything looked like it should......but i could not log in to the /manage
 
I decided to go ahead and update python to 1.5.2.....then I removed the Zope rpm package, and installed Zope 2.1.2 thinking that should fix it......wrong!!!!
 
Same thing.......
I did find the zpasswd ....it edited the /var/zoipe/access(yes, I did figure out it had moved :-)) and it encrypted my new password....this is a nice new feature.  I still can't log in though.  I left the domain completely off.....I put in a :*, I've tried everything.
 
I've now tried removing that rpm, and downloading the source rpm for 2.1.2
I did a rpm --rebuild....
then installed every rpm but the Zope-pcgi......(I'm wanting to run it on 8080)
 
I still get the same thing.........]
Now my hair is gray...and coming out.
Someone please shed some light on this...
Thanks,
Barry Smoke