The Dow and housing stocks all took a tumble for the beginning of the week, as oil prices rose.  The Dow lost two-thirds of a point to close at 12,090.03.  Skyline closed down 5.31 percent, Nobility Homes lost 5.18 percent, and Cavco lost 2.89 percent.  Deer Valley remained unchanged.  The Manufactured Housing Composite lost 3.79 percent to close at 1117.90.