qzlsfile job starting unexpectedly

As users sign on in the morning, two jobs get kicked off. The first is the user's interactive job in qinter. The second is a job in qserver (JOB 123456/QUSER/QZLSFILE) that starts at the same time. The exception to this is myself and one other user. Our QZLSFILE jobs inexplicably start at 4:43:17 in the morning. When I display the job log for the other user it just states that the job entered the subsystem at 4:43:17 and that it's servicing user profile BOBSMITH. When I display the joblog for my QZLSFILE job it shows the same error happening over and over again...
Servicing user profile SMITHEL from client MY.PC.IP.ADDRESS.
Error exchanging security information for user SMITHEL on Network Server
OUR.OPTICAL.JUKE.BOX .

Neither myself, or the other user are here or signed on when these jobs kick off. My pc is left on, but logged off. We did move to V5R4 a few months back, but I can't say that was the cause, as I'm unsure how long this has been happening. Can anyone advise where I might find information on why these two jobs are being kicked off?

TIA


Emily Smith
Programmer/Analyst
Bank Data Services
(618)659-4550
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