Right, I've fixed the un-responsiveness, firstly by only looking for plugins that were slow to respond ever 1000ms, and secondly by only re-creating the plugin button list if a new plugin is found.

I have noticed though that the list uses custom delegates and these don't have any way to show they have been pressed. I need to do some reading to work out what I should do in ResultsWindow:n_tblResults_clicked(QModelIndex index) to re-paint this list item with some extra colour added. Any thoughts/ideas appreciated.

I'll push an update to extras-devel this evening come what may, though I want to reduce the start up delay by moving the gst pipeline setup to a thread before we push this to extras-testing.