Yell/Shout disabled?

[EmSix]

So currently on Excalibur, there are absolutely 0 zero shouts or yells, in any zone.
When shouting myself to try and recruit for groups I get no responses, even for high popularity things, others are having the same experiences. Linkshell, tells and party chat are all working fine.
Have Yell/Shout been disabled, possibly to counter RMT?

If this is the case, this seems like an extreme solution to a minor problem.

EDIT: Seems they're working again now.