  We study numerically the phase-ordering kinetics of the two-dimensional
site-diluted Ising model. The data can be interpreted in a framework motivated
by renormalization-group concepts. Apart from the usual fixed point of the
non-diluted system, there exist two disorder fixed points, characterized by
logarithmic and power-law growth of the ordered domains. This structure gives
rise to a rich scaling behavior, with an interesting crossover due to the
competition between fixed points, and violation of superuniversality.
