Virgin Blue passengers say they've been told there could be a third day of flight delays in Australia.
Thousands of passengers were stranded on Sunday after a computer glitch caused the company's check-in system to crash.
Seventeen Virgin Blue flights have been cancelled so far on Monday as the airline scrambles to clear a backlog.
The airline says the system is back online, and it hopes the delays will over by the end of Monday.
But some passengers stranded at Melbourne Airport say they might not get a flight until Tuesday.