Hi everyone, Weird one this... on my new unibody Macbook, whenever I run my finger anywhere over the casing, either on the inside or over the lid whilst it's closed, I get a strange vibrating sensation through my finger! But only whilst it's plugged into the mains adapter. When it's running on battery power, I don't feel it at all. It's not even a mild sensation, it's rather strong, and runs right the way up my finger. Does anyone else get this on theirs?!