Total Memory not being returned

[scs1]

I'm pretty new to zabbix and wouldn't be too accustomed to server set ups so this could be something small and simple to fix but here it goes.

I've made a graph displaying the total memory, amount of memory available and memory in use as a graph template and for the majority of my servers...

[bmcclure]

I have four OpenVZ VPSes. Three of them run CentOS, the other runs Ubuntu.

I have Zabbix Server and Agent 1.8.2 on the Ubuntu server, and Zabbix Agent 1.8.2 on the other three.

All of the memory values being retrieved by Zabbix seem to make no sense.

Server:...