Tnx DavidR.

Ok i wanna explain based on my experience with avast.

What behavior shield detect as suspicious as it is same with antirootkit and autosandbox.

Ok in summary.

I always get NpptNT2.sys as the 3 feature of avast as a threat file.

Again all this

Autosandbox = behavior shiled = antirootkit

This 3 feature detect all the same.

Autosandbox? well its annoying poping up but i know how to configure to stop this pop up.

Behavior shield is same but i know how to exclude it.

Antirootkit sometime it pop ups.

My concern is that they are not testing this file as many of us here receiving this alert.

What if other people delete this file?

Anyway i will give you the link as this were the present of now appearing on my new OS and new avast build.
http://forum.avast.com/index.php?topic=78259.msg646866#msg646866

My other complain is still paused and not yet appearing which im still observing on it because
this build still new. I hope the other are already fixed.