[Zope] Usernames in ZopeHTTP logs

I found Zope's HTTP logs at: ...zope/var/server.errors which is what I need to monitor the server, but they don't appear to be including usernames (just a '-' in that field). How can I turn logging of usernames on? Cheers, Martin -- ### Martin Dougiamas -- Internet Agent ### Centre for Educational Advancement is == i see ### http://cea.curtin.edu/staff/martin