The best part is when the servitors start acting up ... while people who are looking for PvP because they're bored due to NPC server down come through. ;p
Just out of curiousity - are mobs also not running at players when attacked?
I've had that on Sieg a few times but never anywhere else. ^^;
It happens from time to time on Lionna too. First time it happened I watched a farmer group try to solo a raid boss, then it started fighting back. I actually got some drops out of that, but not from the raid boss. ;)