Notification Interval being ignored

[powersports]

VMWare Image - Nagios XI 2011R2.1

I have a contact setup just receiving warnings and recoveries (sysadmins).
It is the only member of the systems contact group. The contact sysadmins is not a member of any other contact group.
I have a service escalation only for Warnings, which this group is the only member of.

The contact's service command is xi_service_command_handler.

The Warning service escalation has the following settings:
First Notification - 1
Last Notification - 0
Notification Interval - 360
The only member of this escalation is the systems contact group. The systems contact group doesn't below to any other escalations.

The service that is generating the warnings, has the following settings based off of a custom Service Template:
Max Check attempts: 3
Retry Interval: 3 min
Check interval: 10 min

Alert settings:
Notification period: 24x7
Notification interval: (blank)

Based on the above configuration I would assume that I would get an email every 360 minutes, as the service is generating a warning. However I am getting an alert every 30 minutes, which is confirmed by looking at the service Notifications, and my Inbox.
Reason - Service Problem, State - WARNING, Contact - sysadmins, Dispatcher - Nagios XI

Not sure if I need to install the new release first?

[powersports]

Well,

I upgraded to 2011R2.4, and I'm no longer receiving notifications every 30 minutes, but I'm now receiving them every 60 minutes.
I didn't make any other configuration changes.

[scottwilkerson]

Can we wait an hour just to verify this is still the case knowing that you have just changed your timezone I want to make sure they aren't related.

Let us know if it continues

[powersports]

I changed the time zone, and still received the errors every 60 minutes. Just for kicks, I restarted whole Nagios server, and I'm still getting alerted of warnings every 60 minutes.

[scottwilkerson]

We might need to see the config snapshot to get the whole picture... Feel free to open an email support ticket