Firefox has been crashing completely randomly for me as of late. Randomly, when a page loads, the entire thing will just crash completely for no explained reason, and it only crashes when loading pages.
That happenned to me with a recent upgrade. I did a full uninstall. Removed the Mozilla program folder, and downloaded+installed the latest version from scratch.
Then of course, it always good to have a good backup browser. Because IE sucks so much a$$, Chrome is your best bet, or Opera if you like being esoteric.
Also ensure your OS hasn't all of a sudden taken to blocking FF when launching, which can happen with certain types of malware.
You might want to try creating a new profile and use that for a bit to see if you're using some unstable setting or plugin. They are in separate folders from the binaries.
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