2006-12-19 21:10:17: (server.c.871) WARNING: unknown config-key: auth.debug (ignored) 
2006-12-19 21:10:17: (server.c.871) WARNING: unknown config-key: auth.backend (ignored) 
2006-12-19 21:10:17: (server.c.871) WARNING: unknown config-key: auth.backend.plain.userfile (ignored) 
2006-12-19 21:10:17: (server.c.871) WARNING: unknown config-key: auth.require (ignored)