1.  on plone sites with charset other than utf-8 "quote" link in message view
    can raise error UnicodeError. i don't know how to fix this.
    FIX: you can disable "Quote" link in "cmfboard settings"

2.  on OS-X and freebsd using DiscussionTool from cmfboard can kill zope.
    simply don't use DiscussionTool
    