AH00051: child pid 14699 exit signal Segmentation fault (11) Opcje

[kabanek]

Siemka,

mam lokalnie (ubuntu 13.10) i na zewnętrznym serwku (centos) apache+php. W php mam swój skrypt, który to w momencie wysłania zapytania do serwera WSDL (komunikuję się via SOAP), apache się wykrzacza. W logach mam tylko

[Tue Feb 25 13:11:07.393515 2014] [mpm_prefork:notice] [pid 14654] AH00163: Apache/2.4.6 (Ubuntu) PHP/5.5.3-1ubuntu2.1 configured -- resuming normal operations
[Tue Feb 25 13:11:07.393556 2014] [core:notice] [pid 14654] AH00094: Command line: '/usr/sbin/apache2'
[Tue Feb 25 13:11:29.422208 2014] [core:notice] [pid 14654] AH00051: child pid 14699 exit signal Segmentation fault (11), possible coredump in /etc/apache2

Tak samo jest na obu serwerach. Lokalnie mam

# php -v
PHP 5.5.3-1ubuntu2.1 (cli) (built: Dec 12 2013 04:24:35)
Copyright © 1997-2013 The PHP Group
Zend Engine v2.5.0, Copyright © 1998-2013 Zend Technologies
with XCache v3.1.0-dev, Copyright © 2005-2013, by mOo
with Zend OPcache v7.0.3-dev, Copyright © 1999-2013, by Zend Technologies
with Xdebug v2.2.3, Copyright © 2002-2013, by Derick Rethans
with XCache Optimizer v3.1.0-dev, Copyright © 2005-2013, by mOo
with XCache Cacher v3.1.0-dev, Copyright © 2005-2013, by mOo
with XCache Coverager v3.1.0-dev, Copyright © 2005-2013, by mOo

# apache2 -v
Server version: Apache/2.4.6 (Ubuntu)
Server built: Dec 5 2013 18:32:22

a na serwerze

$ php -v
PHP 5.3.3 (cli) (built: Dec 11 2013 03:29:57)
Copyright © 1997-2010 The PHP Group
Zend Engine v2.3.0, Copyright © 1998-2010 Zend Technologies
with Suhosin v0.9.29, Copyright © 2007, by SektionEins GmbH

$ httpd -v
Server version: Apache/2.2.15 (Unix)
Server built: Aug 13 2013 17:29:28

jak mogę sprawdzić co jest nie tak i jak to rozwiązać?