No Dirty Bits Set On Dirty Block.

Occurs on:  68 only.  This is an Abend error.

Meaning:  The process in the multi-tasking kernel that writes a modified
          (dirty) block in cache memory back onto the disk was notified
          that a dirty block existed but the process could not locate
          it.  This error is the result of a failed internal consistency
          check and should never occur in NetWare.

Cause:  This error could be caused by a memory failure in the file
        server and could be attributable to either a hardware failure or
        poor power line conditioning.  A corrupt operating system file
        might also cause this error.

Solution:  Reboot the file server.  If this error or other Abend errors
           occur repeatedly, reinstall the operating system and then
           check the file server's memory and power line conditioning.