Now it is getting weird.
The error disappears if change
p.put("org.omg.CORBA.ORBInitialHost", "<MY HOST NAME>"));
to
p.put("org.omg.CORBA.ORBInitialHost", System.getProperty("slayer.host", "<INSERT HOST_IP_ADDRESS>"));
...
The methods get invoked on the server now (wupdidu) but there still seems to be a marshalling problem, at least one of the fields (a string) i specify in my filter object is reported to be null. I know for sure that this is not true, since i have my debug output on the client side prior to the ejb call.
Client is windows xp host with java 6_11, server is sparc with Java 6_6
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