Aloha,
FWIW here's what I found while backing out the hotfix on my zope 2.7.5:
The hotfix-installed files are set to an owner, group and perms that do
not work with an existing install (zope fails to start up
completely/correctly). I don't know if there are other problems also,
but that was the
The trick is to do something like this which is what I did:
$ cd /usr/lib/zope-2.7.5/lib/python/
$ wget
http://www.zope.org/Products/Zope/Hotfix_2005-10-09/security_alert/Hotfix_2005-10-09.tar.gz
$ tar -zxvf Hotfix_2005-10-09.tar.gz
$ chmod -R 644 .
$ chmod -R +X .
That's on a debian to. YMMV.