You can actually see that happening before in my charts:
http://xpm.muuttuja.org/charts/If you look closely enough, the network block rate seems to have dropped when we went from 8.996 to 9.0. Of course we were using an older version of the mining algorithm back then which probably behaved slightly different.
OpenDNS has blocked xpm.muuttuja.org due to a security threat that was discovered by the Umbrella Labs.
If you think this shouldn't be blocked, please email us at
security-block@opendns.com.
That explains a lot of things. What is the nature of the threat ?