The post about the sharks vs killer whales requires you to instal silverlight. What is it? Does it contain spy/mal/virus crap? I've been getting crap from everywhere lately. Seems like the worst time I can ever remember for so much crap being spread around the net.
Silverlight is from Micosoft, I've installed on at least 2 computers with no issues. Don't know what it does, just required for some stuff as you found out.
Given the diversity of the human species, there is no “normal” human genome sequence. We are all mutants.