From PFRC Wiki
Are you sure listed date is the correct date for berzerker? GT list - 07 Feb 2011 "I called Guy Wicker and got him to commit to dates for Berzerker. The festivities will be held from July 21 - 24, 2011 at the usual place, with all the usual provisos. Roxanne"
Yeah, no one has updated this since last berserker. whoops.