scp fails ~50% of transfers with 'Corrupted MAC on input' on HP dc5850

Solution Verified - Updated -

Issue

  • A high percentage of scp transfers fail with Corrupted MAC on input. or other SSH errors like hash mismatch, or key_verify failed for server_host_key.

  • Similar failures are seen when using scp to localhost (127.0.0.1).

Environment

  • Red Hat Enterprise Linux 5.4
  • HP Compaq dc5850 Business PC
  • AMD Phenom 8600B Triple-Core Processor or AMD Phenom(tm) 9600B Quad-Core Processor
  • 32-bit installation
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