I'm seeing in /var/log/messages a line:

kernel: [blah] gwpoa[psid] trap stack segment ip:pointer sp:pointer error:0 in libc-2.11.3

And the post office is dead. I did get a core dump. Is the next logical step to open a ticket with Micro Focus support?

This post office dies maybe once every few weeks. Prior to this, the error in /var/log/messages was:

kernel: [blah] gwpoa: page allocation failure: order:1, mode:0x20

But last weekend we upgraded to build 129832 of GroupWise.