Since you are talking about the "2010" dates, I presume you are talking about Monday, January 4th.
I think Disney has made some MAJOR errors in scheduling that week, LA Unified School district and many other schools in the Southwest don't go back to school until January 11th, manily due to the fact some families keep their kids out for the full 12 days of Christmas, and have major celebrations on Three Kings Day, January 6th. (a lot of them have left the mainland USA to their Home Country (or places like Puerto Rico) and it costs the schools a lot of money in unexcused absences.
Second of which is the fact that the Rose Bowl is hosting the BCS National Football Championship Game on Thursday, January 7th.
But Disney has went to the basic 10 to 8 hours at Disneyland (10 to 6 at DCA) and no parades Monday through Thursday.
With the SoCal and SoCal Selects not blocked out, and so many local kids having the week off.... Looks like Disney is going to have to think about expanding hours, maybe not until after they find the large crowds in the parks.