Never seen this Norton popup before

NIS 2012
Vista home premium 32 bit

Ok my PC is on almost all the time , even when I’m away at work.
So the other day I go into the room where we gave the PC. On the screen us what appears to be a box from NIS indicating I needed to restart my PC . It gave options if I wanted to do it now or be reminded later (with various time options like 1 hour later etc)

I know there was a recent Firefox tool bar update by Norton and that’s why I needed to reboot

But I have never seen the notification like this one before
Has this been an enhancement to NIS 2012?