i dont get it

Can somebody please explain to me :

Centro has $26.6bn worth of properties,

United States - $17.29bn
Australia - $9.31bn

it has a total of $3.9bn worth of debt they have to cover in 12 months or less, surely they can easily cover for this by selling a few assets?

Even though the sub prime markets cause their properties to fall in value, if they sell it at 80% of book value, won't it still be enough to cover their debts easily?

Why have they gone down so much? going through their annual report they have 99%+ occupancy levels in Australia and 95% in the US. Much of their space (44% both in in AU and US) is also leased out to supermarkets, and a further 14.2% to discount department stores, surely there's no shortage of income. I think they have been farrrrrr oversold, no way is this company heading for liquidation