Lost remaining days from previous trial when updating to 17.1

I just bought a new pc with a 90 day free trial and had 65 days remaining. I updated when notified that an update was available. Once updated, Norton advises me that I now have 15 days remaining. Although applying my user key changed the number to 35, I can't help but feel cheated here. Is there some way to remove the latest update to reinstate my remaining 65 days?

 

BTW, my version # is 17.1.0.19

 

[edit: changed subject to reflect thread move] 

Message Edited by Tim on 01-12-2010 10:50 AM