Comment on: "Orbital-selective Mott transitions in the anisotropic   two-band Hubbard model at finite temperatures" by C. Knecht, N. Bluemer, and   P. G. J. van Dongen, cond-mat/0505106
  A detailed comparison of QMC/DMFT results for the non-isotropic two-band Hubbard model by Liebsch [Phys. Rev. B 70, 165103 (2004)] and C. Knecht, N. Bluemer, and P. G. J. van Dongen [cond-mat/0505106 (submitted to Phys. Rev. Lett.)] is given. Both results are shown to be in excellent agreement. Thus, the claims by Knecht et al.: ``The second transition [was] not seen in earlier studies using QMC and IPT'' and ``Our high-precision data correct earlier QMC results by Liebsch'' are shown to be unfounded. 
A. Liebsch