i find the problem.
there is no way disabling avast self defense in silent/gaming mode.
i think it's a bug. when in silent/gaming mode, there is no notification when you disable avast self defense.
that's why the setting revert to the begining.
@DavidR
The problem is, i just replace my notepad with notepad+ (stupid me ^^)
about the icon, i'm just kidding. i love my shell plain, that's all.
thanx.