Like a trailer for a monster movie, a new report by Deutsche Bank is promising scary things in the not-too-distant future. Assuming that housing prices continue a decline, the percentage of underwater mortgages might rise to 48 percent of the total, or roughly 25 million loans, by the first quarter of 2011. The bank is predicting that U.S. home prices will decline a further 14 percent from current prices by the first quarter of 2011.