SLA Times off

SLA Times off

I set an SLA High respond time of 5 minutes, and a resolve time of 25.
I created a trouble ticket at 12:47
 
Configuration is as follows:
 
 
The SLA response email was sent to Valerie at 12:55
Jeremy Recieved the resolution SLA email at 1:05 AND at 1:15.
 
The times on all our servers and PC's are synced up.  Email is hosted in house so no delays on delivery.
 
Is there anything wrong on why the times are off, this cn be worrying, especially on high priority problems.
 

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