You probably haven't changed the message cache
The default Sun JVM sets max memory to 64M
but the message cache is set to soften messages
to disk between 500 and 600M
Which book did you get a durable topic subscriber from? I've been looking for such an example as my MDB has run into some problems when I tried to make it durable. Thanks in advance for the pointer.
ps: any chance you could post the relevant working xml files? I'm happy to buy the book but need the files now! :-)