And all other driver dofs are quiet as well.  Remember, Monday night 29667, this channel, H1:ISI-BS_BIO_IN_CD_ST1_V3_STATUS, was dropping to zero, indicating a thermal problem.  Checks suggested the coil driver was not actually sending the bad signal and the BIO Chassis was responding appropriately to simulated state changes.  The I/O computer cards were reseated and by default, all the machines were power cycled.  Maybe we've seen the last of this issue for the time.