PROBLEM: (73882, 75254, 75228) (PATCH ID: OSF500-146)
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This patch fixes the following problems:
    - Processes may hang due to waiting for I/O interrupts.  This
      was seen when running some AdvFS stress applications.
    - The SCU command "set pages pcf" will hang a system
      when ATAPI CDrom device is selected. The system will
      stay in a hung state until a timeout occurs at which time the
      device cannot be accessed  until after a hard reset.