I was trying to get remoting working with a project I am working on it was constantly failing without any indication of error in the Seam debug window or the server logs.
The Seam debug window indicates that the server side request is being invoked and looks fine but when testing the debug window just says response packet followed by nothing. My server method code never gets hit.
I posted a lot more information on the forum. Please see http://www.jboss.com/index.html?module=bb&op=viewtopic&t=114820 for more details.