The issue seems isolated to hosts using that template only? It looks like you're using XI, and you said you have livestatus as well. What else is this system running? Personally I've never seen this issue before.
As agent smith requested above, what else is running on this system? I don't believe that we can support this further, as there are a lot of other factors in play here.
Regardless of Livestatus being present, we do not support Ubuntu for XI installs. CentOS or RedHat versions 5 through 7 are all we can guarantee right now.