ntkern.dll is a malware. I was browsing a website and entered into a ****** site. Google warned me about it but still i entered. I was using interent explorer based maxthon, then my system freezed and swap file size increased from 10 MB to 250 MB, after that a zonealarm's dialog poped up asking permission about ntkern.dll is trying to connect to internet. If it would not have been zone, then my day was ruined or i would have had a good punishment of visiting a ****** site. PM me if anybody wants to see it. Its not a porn site.