[Zope] What does "Aiiee ......error code " mean ?

[iap@y2fun.com]

My Stupid error log contains the following error message :
======================================================
2002-02-10T10:50:23 ERROR(200) zdaemon zdaemon: Sun Feb 10 18:50:23 2002:
Aiieee
! 24091 exited with error code: 11
------
2002-02-10T10:50:23 INFO(0) zdaemon zdaemon: Sun Feb 10 18:50:23 2002:
Houston,
we have forked
------
2002-02-10T10:50:23 INFO(0) zdaemon zdaemon: Sun Feb 10 18:50:23 2002: Hi, I
jus
t forked off a kid: 24118
------
2002-02-10T10:50:23 INFO(0) zdaemon zdaemon: Sun Feb 10 18:50:23 2002:
Houston,
we have forked
======================================================

Does anyone can give me a hand on how to figure out what does "error
code:11" mean?

Thanks  a lot.

Iap, Singuan