  The production of charmonia in relativistic heavy-ion collisions is
formulated within the framework of a quantum kinetic theory simultaneously
accounting for breakup and recombination processes. The survival probability of
J/Psi mesons is evaluated for a Mott-Hagedorn resonance gas, whereby the
pattern of anomalous J/Psi suppression at CERN-SPS can be explained by a strong
coupling to open-charm states and their in-medium modification. Recent data for
charmonium suppression from Au-Au collisions at RHIC are discussed.
