Comments on ``An Exact, Three-Dimensional, Time-Dependent Wave Solution   in Local Keplerian Flow'' by Balbus and Hawley (astro-ph/0608429)
  We analyze the scepticism on the hydrodynamic turbulence in Keplerian astrophysical disks expressed in Balbus and Hawley 2006 and show the failure of arguments of the paper. 
G. D. Chagelishvili and A. G. Tevzadze