I was in The Courtyard Area of The Hole last night and twice we fought
Elemental Channelers would couldn't be mezzed. Both a 52 Enchanter and
myself (54 Bard) couldn't get our Mez's to stick.

Channelers can cast spells that group members have; and our Druid (a VERY
good player) insisted she didn't DOT him by mistake. The Wizard in the
group is new to my guild and I haven't played with him very much - but there
was no evidence that he was a sloppy player and not a single instance all
not (otherwise) of mis-targetted mobs.

I did notice that when I was finally able to get the Mez to stick - that
there was a significant amount of damage on the mob.

The only conclusion I could make was that they DOT themselves. Again -
Channelers can cast any spell that any player in the group has memmed - you
often see them CH...

Slyde