Saudi texbooks intolerant toward Christians and Jews?

http://www.slate.com/id/2195684/?GT1=38001

This story on Slate suggests that Saudi textbooks encourage students to hate Jews and Christians. Please discuss, especially any Muslims out there with first-hand knowledge of this. Are Saudis specifically and Muslims in general really this intolerant of other ideas?

I had thought that Muslims considered Jews and Christians "brothers of the book" or something like that, since all three have the same roots.

Are Christians and Jews any more tolerant? It may be trite, but why can't we all just get along and respect our differences?