And you blame that on Firefox? lol
Just because you happened to be running Firefox at the time your system crashed doesn't mean it was the root cause. I have never heard of a web browser causing a system failure so bad it needed a OS reinstall.
I don't know how it happened, but I know it happened. Whenever I tried opening FF after that it just crashed and created a log file. Also, every other Application I had would crash instantly when I clicked on it, but they ran fine in the background.