  In a recent article (Phys. Rev. B 71, 224402 (2005)), Safonov and Bertram
claim "inconsistent" results can occur when applying the "Callen-Welton
fluctuation dissipation theorem" to magnetic systems with dissipation. This
author strongly disputes these claims, and instead will show that the
inconsistencies claimed by Safonov and Bertram stem solely from a failure to
correctly complete a linear transformation of variables, and a concomitant
invalid application of well known fluctuation dissipation relations. When used
correctly, such fluctuation-dissipation relations most certainly will apply to
magnetic (or other physical) systems with dissipation.
