I know it's really strange.
I wash them at 60 degrees and occasionally tumble dry on low but normally line dry them, use tiny amount of fairy non bio and nothing else.
I did buy them all at the same time though brand new from a company at the baby show at the end of 2008 but can't remember the name of them
but did contact baba me but after asking for photos from me they have never got back to me again
might try them again!
I have washed them again several times but each time they just get worse rather than better so don't think they have dried in a dodgy position or anything like that. I think they just happened gradually as I never noticed them come out of the wash like this at any one point or anything and they all wouldn't all have been washed at the exact same time neither so even if I did do something in the wash by accident once it wouldn't have affected so many of them.
I do wonder if perhaps they have dried in a strange position as it did happen around the time I had my new baby so wasn't always that on top of the washing/drying etc but I wouldn't have thought that would effect them forever
Really annoying, as I have just had to buy new inserts so I can keep using the nappies, but have to buy them gradually so only have 3,lol!
Anyway thanks for all your help and suggestions and ideas