Переезд на apache 2.4

 Получаете ошибки вида:

 [Wed Dec 18 12:40:44.833029 2013] [authz_core:debug] [pid 11021] mod_authz_core.c(802): [client 127.0.0.1:56811] AH01626: authorization result of Require all granted: granted
 [Wed Dec 18 12:40:44.833055 2013] [authz_core:debug] [pid 11021] mod_authz_core.c(802): [client 127.0.0.1:56811] AH01626: authorization result of : granted


Вам сюда:

Upgrading to Apache 2.4 – Ubuntu 13.10 upgrade stories