apt-get remove php5-xcache or comment out all lines in the xcache file in /etc/php5/conf.d/ by adding a ; in front of the lines. Thats not possible as far as I know you can just try to disable it globally by commenting the lines out and then enable it per site by adding the lines into the custom php.ini field of the website.
Thanks Till, Removing it was the easiest options. It looks like ionCube does not like it for soem reason. Thanks a million,
