recently i bought a Nintendo DS lite with my own money that my grandma gave me as a birthday present. everything worked fine. for two weeks that is. with my Nintendo system i also picked up Mario kart DS from the local target store. suddenly one day i noticed the right shoulder button had trouble registering key presses, and that it required me to press it hard to get any response. this problem sometimes occurred, other times it worked like normal. living in a harsh winter, i blamed the freezing temperatures for the problem. soon, the left... read full review »