Not sure if do not quote me back means I can't say anything, Capt Jack, but if you wouldn't mind taking one of your admin accounts, turn on notitifications and having one of your minions hit either with quick repeated attacks or a bunch of spells and see if you can duplicate the problem?
What we experience is total freeze out--I'm online I hear a system beep, I click on it, and its 67 events already, I click again to see what events they were and another 46 happened, so over 100 events in what at my end was only 2 click and less than 2 seconds.
The person I was chatting to experienced the same slow down, freeze where they could not do any actions.
Anyway, its not just me, lots of people have told me the same thing happens to them. You may be absolutely right that its not a server issue per se, but its some flaw in the game and pretty big one if you ask me.
Till its identified and fixed, though, I don't think such "speed attacks" should be considered ethical.