After a long hiatus, Samsung re-enters the U.S. laptop scene by releasing several new notebook lines. The slimmest machine, the NP-X360, is squarely focused on the MacBook Air. Its cousin, the NP-X460, includes an optical drive and a larger screen. The other standout machine is the NC10, the company's entry into the sub-$500 mini-laptop space. PC World's Darren Gladstone talks to Samsung product expert Greg Adler.

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