  It is shown that a perturbative treatment of nonabelian Debye screening at
high temperature suffers from infrared problems already at the next-to-leading
order, which is given by ring-resummed one-loop diagrams. Superficial infrared
power counting would let one expect a sensitivity to the magnetic mass scale
only at higher orders, but the form of Debye screening depends on the analytic
structure of the correlation functions, which is strongly sensitive to the
existence of screening of static magnetic fields. [Invited talk at the Workshop
on Quantum Infrared Physics, 6-10 June 1994, American University of Paris,
France]
