Fortunately for me, the horror ended last week. They were doing mainteance stuff to the power network here and my street was accidentally shut down along with the repaired sector... more than once in few days, LOL. Well, it wasn't funny for me when I was in the middle of downloading a file... I borrowed my Dad's UPS, but it couldn't support my new power-hungry PC... phew, all is fixed now, but it costed me some nerves...