The MacBook owner in this case said he had noticed his MacBook's
battery life over the past three weeks had been in decline and the
symbol indicating how much juice was left had been acting erratic.
Hours before the fire broke out he had trouble getting the machine
to wake up. He plugged in the laptop and it started, but the
machine indicated the battery reserve was 0 percent. After surfing
for a bit, he put the notebook to sleep mode and left it to
charge.
As unsettling as it was to pick up and blow on a flaming laptop at
3 AM in your jam-jams, or to lose precious data on his hard drive,
the poster said there was one trauma topping the list.
The most important is in this two paragraphs....
1st paragraph tells you that if your batt....has much reduced
discharging time...and acting erratic, then you better dun use
it.
Also, do not use your batt until 0 percent and charge your batt at
close to 0 percent for old batt.
2nd paragraph says it best, when you laptop's in flames, your HDD
is burnt, and ALL your thesis, data, games saves, projects WILL BE
GONE!!! so please do backups on portable HDD! 
