Stranded Qantas passengers line up as they seek information at the check-in counters after their flights were cancelled at Singapore Changi Airport October 29, 2011. Australia's Qantas Airways grounded its entire fleet on Saturday over a bitter labour dispute in an unprecedented move that prompted the government to warn it feared for the airline's future and would seek action to end the dispute. Qantas said it would lock out all employees from Monday night in a dispute affecting 70,000 passengers and 600 flights on one of the country's biggest travel weekends. The grounding does not affect Qantas' budget airline Jetstar. REUTERS/Tim Chong (SINGAPORE - Tags: TRANSPORT BUSINESS EMPLOYMENT)