I'm trying to out-do the depth and cultural significance of the 'hanging out washing' thread here.
We've never really bothered with rinsing even pans before dishwashing, but have had huge probs with the machine of late - to the point of thinking it was finished. Nearly every item had stuck-on muck glued to the sides. However, I've just used HG Service Engineer from Lakeland in it - it's a powder cleaner - and it seems to have cured the problem (touch wood). So was it all our fault for being too lazy to rinse? And does this mean we have to rinse before loading now?