You didn't look carefully. The delete button was replaced by a little round close button with an "x", in order to prevent "accidents", I think.
I know what you're thinking! "Neptune! Get rid of those filthy advertisements and give us back the Zarathustra siggy, you horrible person!" Well, don't worry about it, the Zara siggy will be back soon, new and improved! ^^ Meanwhile, just do what the sig tells you to. >.>