I got my mbp 2.4ghz santa rose 256mb 8600 replaced by a 2.66ghz unibody 256mb 9600gt

but it wasnt because of the nvidia card, it was coz of the logic board failure. but again the nvidea card is soldered on the logic board! so cant say for sure. my screen did die off on me 1ce and the apple tech guy did say that its a graphic failure!