From: <kim@...>
Keep in mind GZ has said that mobs have a chance of breaking
out of certain spell effects (e.g. root) every round (I'm
guessing that's 2.5 seconds). Pixie Strike and Lullaby would
definitely fall under that category since they often do not
last their full duration. Assuming that's the case, the 0 sec
Strike would be:

Strike not resisted
Stunned
Roll to see if mob breaks out
Success - mob breaks out
Unstunned

So even a 0 second stun on yourself should be accompanied by
the "You are stunned" message.
That might make sense, except that from the data it was apparent with
Lullaby that either the Mez (your right better term) lasted the full
duration, or it lasted for 0 duration. It never lasted for 3 seconds as
would be the case if they were getting a chance to break out every round.
Since these mobs all had Speed Factors of 30 it was really easy to see. I'd
lullaby, mobs would nod. Some nodded mobs would attack immediately,
sometimes in the middle of propagating the nods messages. No mobs that did
not attack immediately would attack thruout that entire pulse. The nodded
mobs that attacked the first time would attack again. The nod messages
would propagate again followed by attacks from some of the nodded mobs
immediately thereafter. Often different nodded mobs, no apparent pattern of
once it sticks you are good, mobs that didn't false nod for 10 pulses would
often false nod for 2 in a row thereafter.

Kitasi