ahoi,

I want to develope a forum with zope. There are products wich store messages and replies in the ZODB.

if you want to, try out http://www.zope.org/Members/kedai/ZTD it's zclass threaded discussion with postgres. give it a go. havent yet found the time to turn it into a real product. will do if there's demand :) meanwhile, a zclass it is hth