diff -up xcache-3.1.0/xcache.ini.old xcache-3.1.0/xcache.ini

--- xcache-3.1.0/xcache.ini.old	2014-01-09 10:45:55.139937807 +0100

+++ xcache-3.1.0/xcache.ini	2014-01-09 10:47:44.972289458 +0100

@@ -66,7 +66,9 @@ xcache.disable_on_crash =    Off

 xcache.experimental =        Off

 ; per request settings. can ini_set, .htaccess etc

-xcache.cacher =               On

+; WARNING set xcache.cacher=On only when no other cache installed

+; Will create conflicts with php-opcache or php-pecl-zendopcache

+xcache.cacher =              Off

 xcache.stat   =               On

 xcache.optimizer =           Off