xjc jaxb Two declarations cause a collision in the ObjectFactoryclass.

[pinguin]

During generation of a webservice with eclipse europe (xfire) using
jaxb I got an error message.
After trying the same with netbeans 6.0 I got an error message.
As it seams, the xsd defenition is case sensative the xjc compiler is
not.

Is there a known work around?

Problem can be reproduced with xjc from jdk 1.6.0_03
output from compilation

H:\Mijn Documenten\KLIC\xjcbug> d:\apps\Java\jdk1.6.0_03\bin\xjc
myschema.xsd
parsing a schema...
compiling a schema...
[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 46 of file:/H:/Mijn%20Documenten/KLIC/xjcbug/myschema.xsd

[ERROR] (Related to above error) This is the other declaration.
line 48 of file:/H:/Mijn%20Documenten/KLIC/xjcbug/myschema.xsd

[ERROR] Two declarations cause a collision in the ObjectFactory class.
line 48 of file:/H:/Mijn%20Documenten/KLIC/xjcbug/myschema.xsd

[ERROR] (Related to above error) This is the other declaration.
line 47 of file:/H:/Mijn%20Documenten/KLIC/xjcbug/myschema.xsd

Failed to produce code.

schema myschema.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" attributeFormDefault="unqualified">
<!--
Simple type defenities
-->
<xs:simpleType name="straatType">
<xs:restriction base="xs:string">
<xs:maxLength value="32"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="huisNummerType">
<xs:restriction base="xs:int">
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="huisNummerToevoegingType">
<xs:restriction base="xs:string">
<xs:maxLength value="4"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="postCodeType">
<xs:restriction base="xs:string">
<xs:maxLength value="6"/>
<xsattern value="([0-9]{4,4}[A-Z]{2,2})"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="woonPlaatsType">
<xs:restriction base="xs:string">
<xs:maxLength value="32"/>
</xs:restriction>
</xs:simpleType>
<!--
Complexe type definities
-->
<xs:complexType name="adresType">
<xs:sequence>
<xs:element name="straat" type="straatType" />
<xs:element name="huisnummer" type="huisNummerType" />
<xs:element name="huisnummertoevoeging"
type="huisNummerToevoegingType" minOccurs="0" />
<xs:element name="postcode" type="postCodeType" />
<xs:element name="woonplaats" type="woonPlaatsType" />
</xs:sequence>
</xs:complexType>
<!--
Element definities
-->
<xs:element name="adres" type="adresType"/>
<xs:element name="_adres" type="adresType"/>
<xs:element name="Adres" type="adresType"/>
</xs:schema>