Update Question

I use the automatic update function.
Sometimes the balloon pop up from the tray saying something like "XXXX number of updates installed" and sometimes no numbers are included in the balloon.

Unfortunately I forgot to take a pic, so what's being updated when no numbers are shown?

 

Sometimes, maybe only heuristic.dat was downloaded and updated so that the number of signatures has not changed and therefore no number was shown. Heuristic.dat was the heuristic engine.

 

Ah Thanks for the info.
Now I need not worry.