When I lived in the United States 20 years ago, (young) people used "Take care." when they parted. So since I came to New Zealand last year, I have used it ocassionally. However, older people's response has not been so good. It might be just my imagination, though. I am wondering if it has a bit of negative meaning or connotation included or if it is only used by young people. I'm now in my late 40's.