Sometimes 30KB are you sure, I don’t know any program that uses only 30KB, 30MB perhaps ?

We are going to need more information to be able to even hazard a guess; CPU, RAM, other security software, etc. ?
You now have over 20 posts so you could use the forum profile, signature for a brief description of your system spec and security programs.

Which memory column are you referring to, see image example of mine in XP Pro SP3 whilst just browsing/posting on this topic.

What exactly does this doing nothing entail, surely you aren’t just sat there watching the task manager (no p2p in the background, etc.) ?