Firewall not updating as frequently as expected

Firewall not updating as frequently as expected

Hello,
 
I have our firewall setup on OpManager and monitoring the different network interfaces; I have noticed that when there are alerts raised these alerts take approx 1 day to be resolved.
When I look at the monitoring data for the interfaces even though it is setup to monitor even 900 seconds it would appear as though it is only logging once a day:
 
27/03/11 12:18AM
26/03/11 11:48PM
25/03/11 01:48AM
24/03/11 04:33AM
23/03/11 12:18AM
 
Do you have any idea why this might be happening? When looking at the real time results the data comes through fine.
 
Thanks in advance for your assistance.
 
Regards
Troy

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