No problems with mine.

I got them in 2001

OK, I'm NOT hard on them....
I don't go crashing thru stickers, willy-nilly.
I don't slide down rocky banks on the seat, yee-haw.
OK, sometimes I fall down in them ( but the knees and butt are multi-layer ).
I use hippers when it's warm and streams are low.

I think that a lot of the complaints that I hear about
waders that "don't last" are from people who are
probably a bit hard on their clothes ( waders included ) in general.

I wash them by hand occaisionally.