There's no mention on here of Nurse With Wound having confirmed, so it must be time for a new full list:
NIGHTMARE BEFORE CHRISTMAS 2006
IGGY & THE STOOGES
SONIC YOUTH
BARDO POND
SIX ORGANS OF ADMITTANCE
JACKIE-O MOTHERFUCKER
CHARALAMBIDES
MY CAT IS AN ALIEN
THE SKATERS
MELVINS
MAGIK MARKERS
ALEXANDER TUCKER
DEERHOOF
WOODEN WAND
SUNBURNED HAND OF THE MAN
RICHARD YOUNGS
WOLF EYES
NEGATIVE APPROACH
DEAD C
MONOTRACT
PRURIENT
AWESOME COLOUR
DKT MC5 FEATURING MARK ARM
DINOSAUR JR
GANG OF FOUR
BE YOUR OWN PET
NURSE WITH WOUND
AARON DILLOWAY
MAJOR STARS
MOUTHUS
BLOOD STEREO
DOUBLE LEOPARDS
DYLAN NYOUKIS
http://www.atpfestival.com/events/nightmare/line_up.php