Filed under: Cellphones, HandheldsWe're no QA experts here, but if your product is called the "Slide," isn't the slide mechanism the one thing you'd test the dickens out of? Alas, folks are discovering that Motorola's Sidekick Slide for T-Mobile has shipped with a devil of a flaw: actuating the display's slide periodically causes the phone to spontaneously reboot or to simply turn off and stay off. We've tested the claim on our own Slide, and yeah, it happens. Granted, it only happened twice out of thirty or so sl