When I run my script that parses a DOMXML Object into smaller more managable objects, it will die on long XML documents [40+ elements] with the error: Unhanded exception in Apache.exe (PHP4TS.DLL): 0xC0000005: Access Violation.  The Apache version is 2.0.36, and I have yet to try this with the 1.3.X branch of Apache.  Here is the output from PHP4TS.DLL where it died:

   006A6391   mov         esi,dword ptr [esp+8]
   006A6395   mov         eax,dword ptr [esi]
-> 006A6397   dec         word ptr [eax+0Ah]
   006A639B   mov         eax,dword ptr [esi]
   006A639D   mov         cx,word ptr [eax+0Ah]
   006A63A1   test        cx,cx

Here is my PHP Script:
<?php

class xmlNodeProperties
{
	function xmlNodeProperties(/*void*/)
	{ }
	
	/*String*/ function getAttribute(/*String*/ $key)
	{ return $this->$key; }
	
	/*void*/ function setAttribute(/*String*/ $key, /*String*/ $val)
	{ $this->$key = $val; }
}

class xmlNode extends xmlNodeProperties
{
	var /*String*/		$nodeName;
	var /*String*/		$cdata;
	var /*xmlNode[]*/	$childNodes;
	
	function xmlNode(/*void*/)
	{
		$this->xmlNodeProperties();
	}
}

class CXMLParser
{
	var /*xmlNode*/		$root;

	function CXMLParser(/*void*/)
	{
		if(!$this->use_file) {
			/*domxmlTree*/ $t = xmltree($this->xml_str);
			$this->xml_str = "";
		} else {
			/*domxmlTree*/ $t = xmltree(domxml_dump_mem(xmldocfile($this->file)));
		}
		$this->root = new xmlNode();
		$this->root->cdata = $this->get_cdata($t->children[0]);
		$this->root->nodeName = $t->children[0]->tagname;
		
		foreach($t->children[0]->attributes as /*domxmlNode*/ $a)
		{
			$this->root->setAttribute($a->name, $a->value);
		}
		
		foreach($t->children[0]->children as /*domxmlNode*/ $c)
		{
			/*xmlNode*/ $n = $this->parse($c);
			if($n === false) { }
			else {
				$this->root->childNodes[] = $n;
			}
		}
		
	}
	
	/*xmlNode*/ function parse(/*domxmlNode*/ $domnode)
	{
		if($domnode->type != 1) return false;
		/*xmlNode*/ $node = new xmlNode();
		$node->cdata = $this->get_cdata($domnode);
		$node->nodeName = $domnode->tagname;
		
		foreach($domnode->attributes as /*domxmlNode*/ $a)
		{
			$node->setAttribute($a->name, $a->value);
		}
		
		foreach($domnode->children as /*domxmlNode*/ $c)
		{
			/*xmlNode*/ $n = $this->parse($c);
			if($n === false) { }
			else {
				$node->childNodes[] = $n;
			}
		}
		
		return $node;
	}
	
	/*String*/ function get_cdata(/*domxmlNode*/ $node)
	{
		foreach($node->children as /*domxmlNode*/ $c)
		{
			if($c->type == 3)
			{
				return $c->content;
			}
		}
		
		return "";
	}
}

class CXMLDocument extends CXMLParser
{
	var /*String*/		$file;
	var /*String*/		$xml_str;
	var /*int*/		$use_file;
	
	function CXMLDocument(/*...*/)
	{
		/*Array*/ $arglist = func_get_args();
		if( !count($arglist) ) {
			$this->xml_str = "";
			$this->file = "";
			$this->use_file = 0;
		} else if( count($arglist) < 2 ) {
			$this->xml_str = $arglist[0];
			$this->file = "";
			$this->use_file = 0;
		} else {
			$this->file = $arglist[0];
			$this->use_file = $arglist[1];
			if(file_exists($this->file)) {
				/*domxmlDocument*/ $d = domxml_open_file($this->file);
				if($d === false) { die("bad xml file"); }
			} else {
				die("bad file name or file does not exist");
			}
		}
		
		$this->CXMLParser();
	}
}

$xmlDoc = new CXMLDocument('
<columns>
	<date name="Adv_Plan">Advanced Planning Meeting</date>
	<date name="Rec_Pre_EUP">Receive Preliminary EUP</date>
	<date name="Start_Prel_FC">Start Preliminary Fuel Cycle</date>
	<date name="Send_Prel_FC">Send Preliminary Fuel Cycle</date>
	<date name="Rec_Rel_EUP">Receive Release EUP</date>
	<date name="Start_Rel_FC">Start Release Fuel Cycle</date>
	<date name="Send_Rel_FC" important="1">Send Release Fuel Cycle</date>
	<date name="Send_Start_Rep" important="1">Send Startup Report</date>
	<date name="Final_eWA">Final eWA</date>
	<date name="LicKickoff">Licensing Kickoff Meeting</date>
	<date name="Mini_Review">Mini Review</date>
	<date name="Send_Dft_FRED">Send Draft FRED</date>
	<date name="Send_Dft_OPL">Send Draft OPL</date>
	<date name="Rec_FRED">Receive Customer FRED</date>
	<date name="SEND_OPL" allcaps="1">Send Customer OPL3</date>
	<date name="Rec_OPL">Receive Customer OPL3</date>
	<date name="SEND_FRED" allcaps="1">Send Customer FRED</date>
	<date name="Download">Download to Manufacturing</date>
	<date name="RLP">RLP</date>
	<date name="SR1" important="1">SLMCPR</date>
	<date name="Send_Drf_SRLR">Send Draft SRLR</date>
	<date name="Rec_Comments_SRLR">Recieve Comments on SRLR</date>
	<date name="Send_Final_SRLR" important="1">Send Final SRLR</date>
	<date name="SEND_PREL_PCDB" allcaps="1">Send Preliminary PCDB</date>
	<date name="PCDB" important="1">Send Final PCDB</date>
	<date name="CMR" important="1">Send CMR</date>
	<date name="SEND_CMR1" allcaps="1">Send CMR Revision 1</date>
	<date name="SEND_CMR2" allcaps="1">Send CMR Revision 2</date>
	<date name="Rec_Cus_EOC">Receive Customer EOC Data</date>
	<date name="SR2">Special Requirements 1</date>
	<date name="SR3">Special Requirements 2</date>
	<date name="SR4">Special Requirements 3</date>
	<date name="SR5">Special Requirements 4</date>
	<date name="Eigen_Rev">Eigenvalue Review</date>
	<date name="FSDD">FSDD</date>
	<date name="Loca_TSD">LOCA TSD</date>
	<date name="Loca_Data">LOCA Interface Data</date>
	<date name="Loca_Start">Start LOCA Analysis</date>
	<date name="Loca_Fin">Complete LOCA Analysis</date>
	<date name="Stab_TSD">Stability TSD</date>
	<date name="Stab_Data">Stability Interface Data</date>
	<date name="Stab_Start">Start Stability Analysis</date>
	<date name="Stab_Fin">Complete Stability Analysis</date>
	<date name="Trans_TSD">Transient TSD</date>
	<date name="TRANS_DATA" allcaps="1">Transient Interface Data</date>
	<date name="Trans_Sel_Rev">Transient Selection Review</date>
	<date name="Trans_Start">Start Transient Analysis</date>
	<date name="Trans_Fin">Complete Transient Analysis</date>
	<date name="TRANS_WRAPUP" allcaps="1">Transient Wrapups</date>
	<date name="BNDL_REP" allcaps="1">Bundle Announcement Report</date>
	<date name="CMIT" allcaps="1">CMIT</date>
	<date name="SEND_OPL7" allcaps="1">Send OPL7</date>
	<date name="REC_OPL7" allcaps="1">Recieve Customer OPL7</date>
	<date name="RES_OPL7" allcaps="1">Resolved OPL7</date>
	<date name="SEND_OPL4" allcaps="1">Send Customer OPL4</date>
	<date name="REC_OPL4" allcaps="1">Receive Customer OPL4</date>
</columns>');
?>