apart from the above, also consider that – to output the whole xml as it does on ajax requests it it will – more than likely – run a ton of functions and queries to get there which will screw your server performance no end….
i haven’t looked at the code as to what it is exactly doing, but to me it seems the plugin runs the whole shebang everytime something is happening even if it has nothing to do with anything it does…
personally (and looking at the reviews – especially the one and two stars of that plugin ) I would really use something else