No, not yet. I had it with two sets they did for me. I got some back last week that where fine. If it happens again I'll mention it, but I mainly use the them as a quick reference and scan the ones I want in higher resolution anyway.
Yeah I'm not totally fussed, only 1 or 2 images are really effected. I'll see what they say though as I'm interested to know why they've ended up like that.
Did you talk to them about it? Just sent them an email now