NIS 2009 RAM usage

Searched prior posts with no real answer to my question:

 

Just installed NIS 2009 after removing 2008 version with Norton Removal Tool. Install went OK however, I noticed that at idle after startup, the system is now using 30-40 more MB of RAM. The strange thing is that the two ccsvchst entries in task manager show the expected 6-8 MB. NIS 2009 is supposed to use less RAM, is it not?

 

I tried removing NIS 2009 and reinstalling. Memory footprint seems to be around 110 MB. Even though ccsvchst looks reasonable, why such a big differnce in RAM? This is far from my area of expertise. Am I missing something?

 

Lenovo T60

Win XP SP2