> 2007-02-21 12:02:42 ib_mthca 0000:07:00.0: Catastrophic error detected: internal error Most likely this is a firmware bug, given that it's repeatable on different hardware. What is your HCA type and FW rev? Or does it happen on more than one HCA type? The catastrophic error buffer contents may be meaningful to someone at mellanox... - R.