Well, after many hours... really too many hours. Looking over the MDB and JBossMQ stuff, I think I have narrowed the problem to the OIL classes. Basically I setup two instances of JBoss (on the same machine), where one was running the JBossMQ service, with a JMSProviderAdapter using the INMV IL (like it comes by default). Then the second server has its provider using the url of the first and XA IL. I then deployed a single MDB into the second instance. It does make use of some JMS resources internally, but the MDB never gets that far, the message I am sending has the wrong properties and an exception is thrown. The application looks like after one message, but after waiting for a few minutes the MDB will loose its connection to the provider. It used to reconnect, but for some reason it is not happy about that at the moment. I was originally testing this under a seperate configuration (which we used to run our service on) and last night I thought that I should try it in the server built directly from CVS to see if that worked. And it did, using the INVM IL, with the MDB and JBossMQ service running in the same VM. This lead me to belive that it could be an IL problem, and then I started switching out to the UILXA and RMIXA IL's and I have not seen the EOFException yet with them, at least not within the same timeframe as the OILXA IL. I am not really sure what the heck is going in inside of the various IL's so I am not about the tackle that at the moment. I am going to retest our service with UIL and if it works then I will go for that for now. Obviously we want to fix this, but I have to bring our main branch back into stability for an upcoming release... blah. JBoss is vastly more interesting to work on than the application that I am building to run on it. Is there any design/arch. documentation for JBossMQ (how the IL's work and such)? I remeber seeing something from Marc about a new rev of JBossMQ, but I can't quite remember (and the GeoCrawler archinve is still down... when are they going to fix that). --jason _______________________________________________ Jboss-development mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/jboss-development