I think this is implemented. Some more tests must be done maybe but it seems to run properly...
I have done some stress test on the pvm and I have found some synchronization problems in the threading model classes. To solve them, I have added some synchronized blocks in the receiver (MemoryReceiver for the moment). I was not possible (neither necessary) to synchronize the entire handle methid as it causes a deadlock in the factorial example. I think, synchro problems are solved now...
can you add a link to the stress test ?