...I've never had an issue with things slipping through sinve I installed NIS.  There is little if any impact on my system's performance even when it is peforming a full system scan and I'm still working in 32 bit.

I'm not interested in playing IT tech contiually manually searching for, downloading, and installing freeware updates as I really don't have the time to do so. 

There was a major overhaul of NIS a couple years ago and Tom's Hardware recently evaluated it giving it high marks.

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...forsaken daughter is watching you.

[Intel Xeon 5660 Hyperthreading 6 core CPU, 24GB GSkill Ripjaws 1333 DDR3 Tri Channel RAM, Nvidia Titan-X GPU with 12GB GDDR5 & 3072 cores, 1 x AData 240 GB SSD (boot) + 1 x 2TB HDD, EGVA 850 G5 PSU Antec P-193 with more fans than Justin Bieber.]