Nope - they are super comfy and don't rub at all. I can walk for hours in mine without any problems and I also like that the sole is thick enough so that you don't feel every lump and bump on the ground.
Some people think they are a bit pricy but I have had mine since 2006 and they are still going strong and have been worn a lot. I think I would have spent more in the long run if I had bought cheaper flip flops. Also, the sole doesn't compress where your feet sit, or curl up like cheap ones do.
HTH!