XML_Parser and php

Is there any known problems with php 4.2.3 and the latest pear xml_parser? I have a class that extends XML_Parser, and I have several problems. One problem is that variables is emptied without notice, and another problem that is that memory seems to be overwridden. I've attached my local functions, and this is the like that causes the problem: $this->aCurrentProduct["category"] .= $data."/"; The right category should be: DATORKOMPONENTER/MINNEN/VIKING COMPONENTS/ but I see things like this: DATORKOMPON/ENTER/MINNEN/VIKING COMPONENTS/ DATORKOMPONENTER/MINNE/N/VIKING COMPONENTS/ DATORKOMPONE/NTER/MINNEN/VIKING COMPONENTS/ DATORKOMPONENTER/M/INNEN/VIKING COMPONENTS/ DATOR/KOMPONENTER/MINNEN/VIKING COMPONENTS/ DATORKOMPONENTER/MINNEN/VIKIN/G COMPONENTS/ DATORKOMPONEN/TER/MINNEN/VIKING COMPONENTS/ DATORKOMPONENT/ER/MINNEN/VIKING COMPONENTS/ DATO/RKOMPONENTER/MINNEN/VIKING COMPONENTS/ DATORKOMPONENTE/R/MINNEN/VIKING COMPONENTS/ DATORKOM/PONENTER/MINNEN/VIKING COMPONENTS/ -- Robin Ericsson <lobbin@localhost.nu>

function cDataHandler($xp, $data) { switch($this->sCurrentNode) { case "PARTNUMBER": $use = "anr"; break; case "DESCRIPTION": $use = "name"; break; case "PRICEWITHTAX": $use = "price"; break; case "MANUFACTURER": $use = "manufacturer"; break; case "MANUF_PARTNUMBER": $use = "manufacturer.anr"; break; case "PRODUCTURL": $use = "product.url"; break; } if ($use != "") { $this->aCurrentProduct[$use] = $data; } if (stristr($this->sCurrentNode, "PRODUCTGROUP_") && $data != "") { $this->aCurrentProduct["category"] .= $data."/"; } } function StartHandler($xp, $elem, &$attribs) { $this->sCurrentNode = $elem; } function EndHandler($xp, $elem) { global $tempProducts; if ($elem == "ITEMADD") { $this->aCurrentProduct["category"] = $this->translateCategory($this->aCurrentProduct["category"]); $tempProducts[] = $this->aCurrentProduct; $this->aCurrentProduct = array(); } $this->sCurrentNode = ""; }