QINTER problems: CPF5390, CPF1317, CPF1189, CPF1196

One person had their interactive job message with
CPF1317-Message . . . . :   No response from subsystem for job 
jobnbr/jobuser/jobname.
Cause . . . . . :   The subsystem failed to respond to a user request 
within 
  the job default wait time limit.  The amount of the function completed 
by 
  the subsystem cannot be determined.  This message may occur if this job  
 
  default wait time is too small or if the subsystem that the job is 
running 
  in is unavailable to respond to the request.  

Also noticed the following in QSYSOPR regarding another job around that 
same time:
CPF1189-Subsystem QINTER varied off work station (wsid). 
Cause . . . . . :   Subsystem QINTER received CPF5390 while using file  
  QDSIGNON in library ROUTINES record format SIGNON.  As a result of this  

  error, work station (wsid) was varied off by the subsystem.

dspmsgd cpf5390 is interesting

Lots of strange messages when I look at the joblog for subsystem QINTER:
...
Not able to transmit to device PAPC3S7.  Session not in send condition.
Input or Output request failed.  See message CPF5423. 
This message used internally only by display function manager. 
Device PAPC3S7 is no longer assigned to the program. 
Restore request failed. See message CPF5217. 
Restore request failed. See message CPF5217. 
I 
Device PAPC3S7 is no longer assigned to the program. 
Lock enforcement rules broken when trying to access object PAPC3S7. 
Function check. MCH2601 unmonitored by QWSRSCRC at statement *N,
  instruction X'0045'. 
Failure for device or member *N file *N in library *N. 
Subsystem QINTER trying to recover work station PAPC3S7. 
Dequeue operation not satisfied in 126 seconds for queue QMIRQ 
Time-out occurred during input or output, device PAPC3S2 failed.
Device CLL3S1 session not active. 
Subsystem QINTER trying to recover work station CLL3S1. 
Device BILLMOS1 session not active. 
Subsystem QINTER trying to recover work station BILLMOS1. 
Device PAPC3S2 not varied off.  Error occurred. 
Vary command not processed. 
Subsystem QINTER varied off work station PAPC3S2. 
Subsystem QINTER failed to vary off device PAPC3S2. 
...

DSPSBSD QINTER
Subsystem description  . . . . . . . . :   QINTER 
  Library  . . . . . . . . . . . . . . :     QSYS 
Maximum jobs in subsystem  . . . . . . :   *NOMAX 
Sign-on display file . . . . . . . . . :   QDSIGNON 
  Library  . . . . . . . . . . . . . . :     ROUTINES
System library list entry  . . . . . . :   *NONE 

DSPFD ROUTINES/QDSIGNON
...
Maximum record wait time  . . . . . . . . . : WAITRCD    *NOMAX
...

DSPJOB of job that had error:
Default wait time in seconds  . . . . . . . . . . :   30

Where do I go with this one?

Rob Berendt
-- 
"They that can give up essential liberty to obtain a little temporary 
safety deserve neither liberty nor safety." 
Benjamin Franklin