Difference between org.xmpp.packet.* and org.jivesoftware.smack.packet.*


I was trying to use su-smack for doing some PubSub notifications from within ClearSpace, but the code ain’t compatible because of this. Su-smack uses org.jivesoftware.smack.packet.* and CS as well as OpenFire use org.xmpp.packet.*

Is there a reason ? And is there a workaroung around this problem (except, obviously by not using su-smack and writing PubSub code myself) ?