$ gdb bin/httpd
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This GDB was configured as "sparc-sun-solaris2.8"...
(gdb) core core
Core was generated by `/usr/local/bin/httpd -k restart'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/local/lib/libssl.so.0.9.8...done.
Loaded symbols for /usr/local/lib/libssl.so.0.9.8
<... deleted the whole loaded libraries>

#0  0xfebb3218 in strlen () from /usr/lib/libc.so.1

(gdb) bt

#0  0xfebb3218 in strlen () from /usr/lib/libc.so.1
#1  0xfda6ac4c in PyString_FromString (
    str=0xfef65ec0 "unexpected parser state - please
send a bug report")
    at Objects/stringobject.c:106
#2  0xfdac9b50 in PyModule_AddStringConstant (m=0x594cd0,
    name=0xfe5a5478 "XML_ERROR_ENTITY_DECLARED_IN_PE",
value=0x0)
    at Python/modsupport.c:589
#3  0xfe57cec4 in initpyexpat ()
    at /usr/local/Python-2.4.3/Modules/pyexpat.c:1973

this happens when running moinmoin 1.5.4, and doing a
gui-edit. mod_python-3.2.10, httpd-2.2.3, solaris 8,
compile with gcc-3.4.6.

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Please file this bug report with mod_python.  That's
typically the cause and it will likely be very hard for any
Python developer to create this setup and much less try to
reproduce the error.

If you can provoke the same error without mod_python or
other third party C extensions, please file a bug report
with the minimal test case to reproduce.

If you need a work-around, I would suggest changing to a
different version of mod_python.

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ok ... i will.

we noticed similar errors when running:
 * edgewall trac 0.11-dev (which uses edgewall ghenshi)
 * xml-rpc plugin for edgewall trac

also, i filed the bug report after changing to newest 
mod_python. the old mod_python with apache 2.0.54 did not 
give a core, just segfaulted.

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This looks like another problem with pyexpat getting
the export symbols from an older expat version.  See:
http://www.python.org/sf/1295808 and
http://www.python.org/sf/1075984
for details.

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thanks a lot, zseil!

with python-2.5 it works, so marking as duplicate of
http://www.python.org/sf/1295808.