The technology sector was stronger than the weakness of the industrial and energy sectors to drive the Dow up just over a quarter of a point to close at 12,426.75.  Housing stocks moved up, down, and not at all.  Cavco gained 1.97 percent, Skyline Corp. moved up 1.91 percent, Nobility Homes was flat, and Deer Valley, which rarely changes, closed down 4.81 percent.  The Manufactured Housing Composite gained 1.59 percent to close at 1271.50.