AP - UNDERWATER MORTGAGES RISE: The number of Americans who owe more on their mortgages than their homes are worth rose in the October-December quarter to 11.1 million. About 23 percent of all mortgaged homes are underwater.<p><strong>Read more:</strong> <a class="rssreadon" rel="external" title="Summary Box: Underwater mortgages in US rise   (AP)" href="http://us.rd.yahoo.com/dailynews/rss/business/*http%3A//news.yahoo.com/s/ap/20110308/ap_on_bi_ge/us_underwater_mortgages_summary_box" target="_blank">http://us.rd.yahoo.com/dailynews/rss/business/*http%3A//news.yahoo.com/s/ap/20110308/ap_on_bi_ge/us_underwater_mortgages_summary_box</a></p>