Everything seems to work fine but..

I have this running on about 8 hosts and 6 of them are not reporting errors and it actually caught a motherboard error we happened to miss in the past. However I am getting the error “WARNING Memory” on two hosts and have absolutely no idea what it means. The hosts are not out of memory, there are not any errors in ESXi that I can find. So besides this error, it appears to be working correctly. Hopefully I can find a solution to the Memory error so I can clear up Nagios instead of having two yellow servers. If anyone has any ideas feel free to let me know.