Betsy,
Not really so much at all - as a percentage of last years's (06/2008) income, it only represents (5m*52)/2.134 bn = 12 %.
Most airlines would be experiencing at least this order of reduction in trading income - QF would have to be experiencing similar results.
VB's problem is the lack of long term cash and debt facilities. That's what will undo it.
VA can only make things worse for the Virgin Blue group.