Question 2 of 3: Ubuntu - apt-get and Update Manager

[Basil Chupin]

Does anyone know, please, why apt-get and the Update Manager behave in 
"different ways"?

By this I mean: I used apt-get update/upgrade and I had upgrades 
installed; I then followed this up with the Update Manager "just for 
kicks" and found that it picked up more apps to be upgraded - and I 
don't mean just one or two but possibly 10. This was a while back and 
now I do this everyday - and it happens almost every time: apt-get does 
its job and then Update Manager finds more and all this within moments 
of apt-get finishing.

Anyone have a suggestion why this occurs?

BC

-- 
And God created Woman; and to repent He then created Beer.