Socket Read Timeout - Couldn't parse stream - Runtime Exception - JOnAS 5.1

Hi,

I'm facing Socket Read Timeout kind of problem concerning CXF services deployed on a JOnAS 5.1.5 application server running with JDK 1.6.
I'm stuck, and actually no way to get rid of it.
The problem happens sporadically,thanks for your comments & help :

The stack :

java.lang.RuntimeException: Couldn't parse stream.
at org.apache.cxf.staxutils.StaxUtils.createXMLStreamReader(StaxUtils.java:816)
at org.apache.cxf.interceptor.StaxInInterceptor.handleMessage(StaxInInterceptor.java:83)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:226)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:88)
at org.ow2.jonas.ws.cxf.http.JOnASDestination.invoke(JOnASDestination.java:111)
at org.ow2.jonas.ws.cxf.jaxws.CXFWSEndpoint.invoke(CXFWSEndpoint.java:151)
at org.ow2.jonas.ws.jaxws.http.servlet.JAXWSServlet.invokeDestination(JAXWSServlet.java:113)
at org.ow2.jonas.ws.jaxws.http.servlet.JAXWSServlet.doPost(JAXWSServlet.java:75)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:340)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)
Caused by: com.ctc.wstx.exc.WstxIOException: Read timed out
at com.ctc.wstx.stax.WstxInputFactory.doCreateSR(WstxInputFactory.java:548)
at com.ctc.wstx.stax.WstxInputFactory.createSR(WstxInputFactory.java:604)
at com.ctc.wstx.stax.WstxInputFactory.createSR(WstxInputFactory.java:629)
at com.ctc.wstx.stax.WstxInputFactory.createXMLStreamReader(WstxInputFactory.java:324)
at org.apache.cxf.staxutils.StaxUtils.createXMLStreamReader(StaxUtils.java:814)
... 21 more
Caused by: java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at org.apache.coyote.http11.InternalInputBuffer.fill(InternalInputBuffer.java:751)
at org.apache.coyote.http11.InternalInputBuffer$InputStreamInputBuffer.doRead(InternalInputBuffer.java:781)
at org.apache.coyote.http11.filters.ChunkedInputFilter.readBytes(ChunkedInputFilter.java:243)
at org.apache.coyote.http11.filters.ChunkedInputFilter.parseChunkHeader(ChunkedInputFilter.java:273)
at org.apache.coyote.http11.filters.ChunkedInputFilter.doRead(ChunkedInputFilter.java:132)
at org.apache.coyote.http11.InternalInputBuffer.doRead(InternalInputBuffer.java:710)
at org.apache.coyote.Request.doRead(Request.java:428)
at org.apache.catalina.connector.InputBuffer.realReadBytes(InputBuffer.java:304)
at org.apache.tomcat.util.buf.ByteChunk.substract(ByteChunk.java:403)
at org.apache.catalina.connector.InputBuffer.read(InputBuffer.java:327)
at org.apache.catalina.connector.CoyoteInputStream.read(CoyoteInputStream.java:162)
at com.ctc.wstx.io.UTF8Reader.loadMore(UTF8Reader.java:362)
at com.ctc.wstx.io.UTF8Reader.read(UTF8Reader.java:110)
at com.ctc.wstx.io.ReaderBootstrapper.initialLoad(ReaderBootstrapper.java:245)
at com.ctc.wstx.io.ReaderBootstrapper.bootstrapInput(ReaderBootstrapper.java:132)
at com.ctc.wstx.stax.WstxInputFactory.doCreateSR(WstxInputFactory.java:543)
... 25 more