Locking problems using CGIDEV2

For several years now my shop has been very successfully using Mel's
CGIDEV2 library to create web enabled apps on our iSeries.  From time to
time however, at least several times a week, some sort of lock will
occur and it will bring down the entire HTTP subsystem.  When we work
with a job that's in a LCKW status, we don't see anything typical like a
file or record wait.  The ONLY clue we find in the jobs sitting in LCKW
status is a message in the joblog: "Invalid space location unlock
request.".

 

Since in a very short amount of time we could have 100 of these HTTP
jobs sitting in LCKW status, the fastest way for use to resolve it is to
end the subsystem, wait for all the jobs to end, then restart the
subsystem.

 

 

Has anyone else seen this problem and if so how'd you solve it?