Light hadron properties with improved staggered quarks
  Preliminary results from simulations with 2+1 dynamical quark flavors at a lattice spacing of 0.09 fm are combined with earlier results at a=0.13 fm. We examine the approach to the continuum limit and investigate the dependence of the pseudoscalar masses and decay constants as the sea and valence quark masses are separately varied. 
C. Bernard, T. Burch, T. DeGrand, C. DeTar, Steven Gottlieb, E.B.   Gregory, U.M. Heller, J. Osborn, R. Sugar and D. Toussaint