This one is going to sound a little weird. While typing in anything i.e. this forum, text editor, word processors etc., my curser will suddenly jump back a paragraph or two. I thought I was just hitting a wrong key or brushing the touchpad etc. so I wasn't very worried about it. But then today I had the strangest jump ever. I was editing the name of a folder and right in the middle of a word the curser jumped to another folder label and started overwriting it. Now I don't even know how to do that intentionally so I have no idea how it could happen accidently. I don't use an external keyboard much so I can't say as to wether or not it would happen with one. MacBook White, OS X 10.5.8, 2.1 GHz Thanks for any input.