id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	phpversion	appname	pending	exts	sapi	probability	blocking
53	500 error with Wordpress	johnleach	moo	"Hi, I'm seeing a 500 error returned in Wordpress.  It is fixed with
either a restart of the php fastcgi processes, or clearing the xcache
cache from the xcache admin page.

It is not with all Wordpress pages, so far I've seen it when posting a
comment.  Posting comments works fine for a few hours/days then
consistently returns a 500 error.

This is with php5-cgi 5.1.2-1ubuntu3.4 package on Ubuntu Dapper running
as a fastcgi process under lighttpd. It's with xcache 1.1.0 compiled
from source (and observed from at least xcache trunk svn r262).

I get no error output from php (to the error_log or php stderr) when
accessing the broken page (though I know php error logging to be
working).

I think the php script causing the problem is wp-comments-post.php but
I've got a couple of comment related plugins installed, such as Akismet
and a threaded comments plugin.

I've got other Wordpress installations on the same box which *reportedly* had the
same problem (but at different times), though I've not seen it myself.

I'm getting no coredump on the error.
{{{
root@mule:~# gcc -v
Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f95,objc,ada,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --enable-nls
--program-suffix=-4.0 --enable-__cxa_atexit --enable-clocale=gnu
--enable-libstdcxx-debug --enable-java-awt=gtk-default
--enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.4.2-gcj-4.0-1.4.2.0/jre
--enable-mpfr --disable-werror --with-tune=pentium4
--enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)

root@mule:~# php-cgi -v
PHP 5.1.2 (cgi-fcgi) (built: Nov  2 2006 12:24:48)
Copyright (c) 1997-2006 The PHP Group
Zend Engine v2.1.0, Copyright (c) 1998-2006 Zend Technologies
    with XCache v1.1.0, Copyright (c) 2005-2006, by mOo
}}}"	defect	assigned	major	undecided	coverager	1.1-dev		wordpress,500,comments					0		Irrelevant