Prestart Jobs

A couple of weeks ago we expanded out test environment to be a complete
duplicate of the live.  We use a product called OSD from OS Solutions to
perform a periodic reclaim storage on a saturday, but as the number of
objects had dramatically increased this took 36hrs rather than 3-4.  In the
middle of this period a collegue performed a full system backup, which on
completion ipl'd the machine and carried on the reclaim storage.  The
consequence of this is that the machine executed the day end/start routines
for sat/sun and sun/mon on monday morning, causing chaos!  Everything was
sorted out, but since then i have loads of prestart jobs in QSYSWRK.  I'm
sure that they weren't there before! A WRKSYSSTS now says that there are
>2000 jobs in the system.
As i'm still fairly new to the 400, can anyone tell me what these prestart
jobs are, what they do, why they are there etc. 

Any help would be appreciated,

Stuart Allen
sallen@fellowes.com


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