After reading a recent thread, Foocha mentioned his 'm' key on his Powerbook repeatedly registering an 'm' long after he pressed the key. Therefore, he had problems typing because there were so mmmmmmmmany m's registering. I have the same problem with my spacebar on my RevB TiBook 550. Anyone else having the same problem? Heard of Apple aknowledging it? Let us know! I thought I had broken it or something when installing my RAM, but I was so damn careful I couldnt imagine I could have hurt it.