found SVChost.exe AGAIN ?!

noticed that usually it comes when my PC is doing nothing + internet is ON.

I think the actual virus file has already been removed your computer.
What's left in your computer is a "backup" of the file residing in the System Restore directory of Windows.
To cure the problem, you only need to turn off the system restore function of your windows.
To do that, right click on My Computer > Properties > System Restore tab
Select Turn Off System Restore Monitoring on all drives.
Restart your computer, then turn it back on.
The above warning should not appear again.