The following error appears in the jboss log.
I haven't found the cause yet but would like to know, if this is something to worry about.
Thanks, Peter

java.lang.IllegalStateException: Current state = FLUSHED, new state = CODING_END
at java.nio.charset.CharsetEncoder.throwIllegalStateException(CharsetEncoder.java:941)
at java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:537)
at sun.nio.cs.StreamEncoder$CharsetSE.flushLeftoverChar(StreamEncoder.java:358)
at sun.nio.cs.StreamEncoder$CharsetSE.implClose(StreamEncoder.java:414)
at sun.nio.cs.StreamEncoder.close(StreamEncoder.java:160)
at java.io.OutputStreamWriter.close(OutputStreamWriter.java:222)
at java.io.PrintWriter.close(PrintWriter.java:287)
at org.apache.catalina.connector.ResponseBase.finishResponse(ResponseBase.java:483)
at org.apache.catalina.connector.HttpResponseBase.finishResponse(HttpResponseBase.java:253)
at org.apache.ajp.tomcat4.Ajp13Response.finishResponse(Ajp13Response.java:191)
at org.apache.ajp.tomcat4.Ajp13Processor.process(Ajp13Processor.java:479)
at org.apache.ajp.tomcat4.Ajp13Processor.run(Ajp13Processor.java:576)
at java.lang.Thread.run(Thread.java:595)