[bdbxml] problem using XmlModify in a multithreaded environment

Hello, 

I'm trying to use Berkely DBXML in a multithreaded environment but every time I test this case, it seems to be in deadlock. I don't get any error message and it hangs indefinitely. I'm using the Java API with whole document storage and a shared Environment with these flags:

    envConf.setAllowCreate(true); 
   envConf.setInitializeCache(true); 
   envConf.setInitializeLocking(true);
   envConf.setCacheSize(1048576);
   envConf.setMaxLockers(5000);
   envConf.setMaxLockObjects(5000);
   envConf.setMaxLocks(5000);
   envConf.setMessageStream(System.out);
   envConf.setErrorStream(System.err);

Each thread creates its own XmlManager and adopts the above environment. I've tested creating and appending documents to a single container, but as soon as I try to use XmlModify I get deadlock. Each thread creates everthing needed to accomplish its task(XmlQueryContext,XmlUpdateContext,XmlResults, etc...)

Any insight into this would be greatly appreciated.

Thank You.

Adrien