I've been playing with the example code for the drag/drop components and have noticed that the bean is set to Session scope.
I changed the scope to Conversation (so that the bean can be released once the conversation is over) and the page seems to work... for a while. Eventually it presents an error:
Component form:cftable has invalid value expression org.richfaces.demo.dnd.Framework@dfaddd
Will this simply not work with conversation scope, or is there a trick to it?