I have no experience with dead pixels yet, so I can't be sure.... but I think one way to confirm it will be to take several pictures that are completely black (eg. with the lens cap on), in raw with lowest ISO setting and fast shutter speed (to keep noise to minimum), and see if the bright pixels are always there at the same position. A little bit like how you'd test for dead pixels on a LCD screen...
Can anyone confirm this?? Or is my idea all wrong somewhere? :embrass:
Anyway, if they are dead pixels, then probably need to get the sensor changed.... not sure if cameras have similar dead pixel exchange policies like for LCD screens.