Here is an excerpt on the A380 from Flight International:
"At speeds above 240kt indicated the outermost aileron is locked out, the remaining two more than sufficient to attain desired roll rates. Each aileron is commanded independently and, due to structural aeroelasticity, may be out of step with its wing mates – deflecting up, for example, while the wing itself is rolling up. All of this is transparent to the pilot, with the system providing control in the roll axis that is precise and predictable."
Also checkout the following link:
IFAC-PapersOnLine: A380 roll kinematics design
Its interesting to note that on the ground and with the flaps raised the spoilers open slightly.
I hope this helps
Obi