At San Francisco's Moscone Center, Apple Computer CEO Steve Jobs debuted an updated iMac. The machine sports the same sizes, same design, same features, and same prices as the Power PC-based iMac. What's different? Jobs said it will be two to three times faster because it uses Intel's dual-core Duo chip. [See video.] Jobs also showed off an Intel-based laptop that he says is four to five times faster than the PowerBook G4. [See video.]More video: Apple's iWeb, a new program for publishing Web sites, includes templates, blog and podcast tools, and one-click publishing.