Botnets simply cannot contribute that much. ...
Not true, when the botnet first got noticed and moved to another pool we were able to see it and exactly how many comps were hitting and how much hash power. it was surprisginly high hash for the number of comps. I do not have the info recroded down to verify so one of the pool ops would have to report, but there is a grph I'm willing to bet someone still has that showed the number of zombies hashing and what their rate was. Believe it was something on the order of 60Ghash and only a few thousand comps.......