I wish there was an explanation for this. I mostly use my xoom to view PDF documents. Compared to my ipad, the xoom is HORRIBLE for doing this. How is it that this dual core beast can't scroll a PDF document smoothly? I've tried every PDF view there is on the market, and I always get the same resutls. Meanwhile, the Ipad 1 scrolls beautifully. I sure wish they could fix that.