I've just re-installed my old traffic analysis software, and I can see it happening in real time.

It is 0346 here MST, just poking around because I can't sleep, and thought of something to do. Don't know anything else - sorry.

My best guess  as to the reason why was stated earlier. The software to mount a DOS attack is now widely available. I'm guessing it is just some disgruntled immature person. You can see one or two like this around here, so not such a rare thing.

Software competitors generally have better things to do, so I'd guess that is a remote possibility. Some jerk is more likely.