IBM just release a "Flash Alert" on page set zero chain corruption using permanent dynamic queues.
After applying UI11858 or its superseded UI13085...some users may experience a chain corruption in PSID(0) causing a loop in a queue manager SRB.
Full details of the problem and its symptoms as well as abend details can be found here:
http://www-01.ibm.com/support/docview.wssuid=swg21684118&myns=swgws&mynp=OCSSFKSJ&mync=E
Happy messaging.
