CXF : Camel 2.12.2 : Karaf 3.0.0 : Soap-Timeout

Hello guys,

I am using Karaf 3.0.0 and Camel 2.12.2

If I send a Soap-Envelope to Jetty, the response
contains a '8000' before the Soap-Envelope.

What does this mean and how can I avoid this?
SoapUi (and my jQuery-Client) is running into timeout.

With Karaf 2.3.3 everything is okay (no '8000').

That's my route:
<route id="XmlTransferRoute">
<from uri="cxf:bean:XmlTransferService" />
<to uri="activemq:queue:XmlTransferQueue?requestTimeout=180000"/>
</route>

I guess this is related to the response-size, because a mirroring
response works (no '8000'):
<route id="XmlTransferRoute">
<from uri="cxf:bean:XmlTransferService" />
<log ..>
</route>

best regards
Thomas

SoapUi Http-Log:

<< "HTTP/1.1 200 OK[\r][\n]"
<< "Content-Type: text/xml;charset=UTF-8[\r][\n]"
<< "Transfer-Encoding: chunked[\r][\n]"
<< "Server: Jetty(8.1.14.v20131031)[\r][\n]"
<< "[\r][\n]"
<< "8000[\r][\n]"
<< "<soap:Envelope
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><XmlTransfer><Response>...
<< "</Response></XmlTransfer></soap:Body></soap:Envelope>"
<< "[\r][\n]"