Some 3,000 people spent Friday night at Amsterdam's Schiphol airport as heavy snow brought air traffic to a standstill in the Netherlands, Dutch news reports said Saturday. "The airport had put up 1,700 camp beds and other people slept on chairs and benches," a spokesman told Dutch news agency ANP. According to the daily "Algemeen Dagblad," many passengers were stranded because of cancelled flights. Many others "were unable to leave the airport because of huge problems in public transport," the daily reported. According to dpa, many Saturday morning flights have been delayed or cancelled and Schiphol expects problems to continue for much of the day, radio NOS reported.