Daily Updating Normal?

I need some help figuring out what's going on, my computer/Norton subscription was interrupted for a couple months due to a house fire (yikes!), and now that I've renewed my Norton subscription, I'm being prompted by Norton to install updates on a daily basis.  This has happened everyday for the last month.  It's getting a little tiresome.  Is there a problem with my updates?  Are they not being installed correctly when I shut down my computer?  Have I modified my account unknowingly to require daily updating?  Obviously, I'm a newbie, so I appreciate any help.  Thanks.  Evan