I'll second this. Last time we were away up on the tablelands, we cooked some sausages for lunch over the fire. We sat down to eat, and left the fire burning away. It wasn't a huge blaze by any stretch of the imagination. One of our party happened to look over while we were half-way through our snags, and the wind had blown some tall, dry grass against the fire. The fire had jumped it's containment, and was now burning about 2-feet up a tree, and just starting to get a hold in the long, dry grass.
One of the boys raced to grab a shovel and clear some more space around the area, another raced to find a sack, while I ran to the camper to get the spare 20L water jerry and pour all over it. Within 5 seconds it was all out and there was no issue, but it really highlighted that if it had gone unnoticed even 10 seconds longer, it might have been a very different story. We would have been lucky to get out ourselves in the cars - there would have been no hope for the campers or any gear.
I'd always been very careful about fires overnight, and ensuring that when we left a spot they were well and truly doused, but I'd never had one get away so quickly while you were using it. So I'm now one of these annoying people who clears at least a 2m firebreak around any fireplace from now on
Timely advice Pete.
Cheers!
Matto