Throwing custom faults

Hi,
I'm trying to catch timeouts and throwing a fault myself, so I can generify all kinds of exceptions into one fault. The problem is, even though I specify my throw as follows :
<throw name="Throw_Fault" faultName="client:InvocationException" faultVariable="fault"/>
the bpel service still returns
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<soapenv:Fault>
<faultcode>soapenv:Server.userException</faultcode>
<faultstring>com.oracle.bpel.client.delivery.ReceiveTimeOutException: Waiting for response has timed out. The conversation id is null. Please check the process instance for detail.</faultstring>
<detail>
<ns1:hostname xmlns:ns1="http://xml.apache.org/axis/">INT-CRO-ADMIN</ns1:hostname>
</detail>
</soapenv:Fault>
</soapenv:Body>
</soapenv:Envelope>
In my wsdl I defined something like this:
<message name="InvocationException">
<part name="body" element="geo:ExceptionReport"/>
</message>
<portType>
<input msg ... />
<output msg ... />
<fault message="client:InvocationException"/>
</portType>
If I look at the instance flow, I see that the fault is catched correctly, and my own fault element is being created, but it seems as if bpel catches my fault again and throws a service.userException ...
How can a client receive my custom fault?

I am also facing the same problem did you find any solution.
If so can you please share it with me.

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