I did an live update with my NIS 2013 and a patch came with it ..normal?

Hi, about a hour ago i did an live update with my NIS 2013 and a patch came with it,

a norton pop-up appeared asking if i want to run the patch the pop-up also said

that it otherwise automatically run later on.

 

I runned the patch but i'm a bit suspicious afterwards cause i never had such a patch

in the six years i use norton, and also because of the problems

with the new 2013 release (my norton icon also appears much too late)

 

mark