I'm facing the same thing, just came here to report this only to find I'm not the only one. I think it only started with the last Definition update.
I have Nvidia Network Controller too. I have no such problem =)
Whenever i update ESS 4 .. it shows a threat message that ekrn.exe has been modified. Shouldn't this be like an exception! Thanks.
http://www.av-comparatives.org/ ESET Nod32 is my favourite. Come on we have to get back our ADVANCED+
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