Sit back and sprinkle a few new processors into its Pavilion line up? Nope, that's exactly what HP didn't do this year when it came to refreshing its successful multimedia laptop brand. Instead, it has remade the entire series by subbing plastic for metal, adding a chiclet keyboard and trimming down the measurements. The 14-inch Pavilion dm4 is one of the more portable of the bunch, and though it's only slightly thicker than an inch, our $905 review unit packed a Core i5 processor, 320GB hard drive and 4GB of RAM. It sure does sound and look like a really tempting mainstream laptop, but one thing in particular continues to hold HP back. And we'll tell you just what that
