We've seen an influx of incorrectly configured xcache servers as of late
Please add
PHP Code:
define('DISABLE_HOOKS', true);
to your config.php file, then change the vBO cache setting to Filecache, then remove the above PHP code (or comment it out).
If you have xcache.admin.enable_auth set to On you need to provide the username and password in the config.php file for this mod.
If not, you'll want to run these two test scripts in order:
PHP Code:
<?php
xcache_set('test', 'Working!');
?>
PHP Code:
<?php
echo xcache_get('test');
?>
Fillip