  We study QCD with two flavors of non-perturbatively improved Wilson fermions
at finite temperature on the $16^3 8$ lattice. We determine the transition
temperature at lattice spacings as small as $a \sim 0.12$ fm, and study string
breaking below the finite temperature transition. We find that the static
potential can be fitted by a two-state ansatz, including a string state and a
two-meson state. We investigate the role of Abelian monopoles at finite
temperature.
