diferent colourprofile in develop and diashow???

hi everybody,
this is my first topic in the LL forum, so bear with me, if this question has been dealt with before.

1.) i´ve discovered, that when viewing the diashow, the pictures(prophoto) show different colours and saturation than when viewed in the library or the developmodul.
there´s no menu to adjust the profile for the D-show, so is there nothing i can do about this?
any advice?
2.) why is it, that when you open a picture in the Developmodule it is displayed sharper until it is really open, then turns softer?

cheers , stephan