Nae,we have just moved in to a relocated queenslander that we moved and renovated ourselves. I believe that you may be talking about a product called cool and cosy (or maybe cool or cozy) I think it is made up of shredded paper and stuff. I remember the ads on telly for it years ago.
Anyhoo, apparently it has been outlawed as although it was treated with a fire retardant, it could still catch fire if there was water in the ceiling at all. Bit like wet hay IYKWIM?
So it all went when we gutted the house (awful messy too, grey crap everywhere)
Dont know if there is another product that can be blown into spaces, but we ended up with batts as we ripped all of the plaster off anyway. HTH xx