JMS && orion

[kevin1]

I have a project to do which depends heavily on message driven beans.  It also needs 
to be as high performance  as possible,
as we are expecting a lot of traffic.  I had planned on using the IBM JDK for this, 
but apparently it may have some problems
with MDB.  The application needs only subscribe to a remote topic and process the 
messages.  Is this a problem?  What issues
have been seen with orion and JMS?