Qantas is issuing an advisory to all passengers on its flights on the safe use of Dell notebooks following the recall of 4.1 million batteries announced by the PC manufacturer last week. The airline said that although passengers would be allowed to carry their Dells either as checked or cabin baggage, they could only use them on battery power or through the aircraft power supply available in some first and business class cabins once they have first removed the batteries from the unit. Qantas said cabin crew would be advising passengers of the measures which apply to any computer affected...