Bots back to full throttle

[Sean Donelan <sean () donelan com>]

The DNS entries for the EFnet and other mainline IRC servers previously 
affected appear to have timed-out/been removed from various ISP 
caching DNS resolvers I checked.  I didn't check if all the routing 
blackholes have cleared up.

User-based IRC servers should back to being pummled by Bot C&C requests
as normal now.

As I said, false positives suck.  Unfortunately there isn't an anti-abuse 
system that never makes a mistake; unless you do nothing.  I'm skeptical 
of people who claim they've never made a mistake.