Why the Proteron claim against Apple is false

Folks,

various news sites recently reported about Proteron's claim that Apple had ripped off their application switcher. I intended to write a good article on that topic, but Daring Fireball has written one that's much better than what I could have written:

http://daringfireball.net/2003/10/commandtab

For anyone who thought their claim was genuine, that article should tell you the whole story.