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Firefox crashes when I go to Facebook.com

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my firefox send a message like this : "Firefox.exe has encountered a problem and needs to close.We sorry for the inconvenience"....... why ?? and how to fix this problem ??

Operating system

windows XP

my firefox send a message like this : "Firefox.exe has encountered a problem and needs to close.We sorry for the inconvenience"....... why ?? and how to fix this problem ?? == Operating system == windows XP

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Locking this thread, so replies all go to the same place: https://support.mozilla.com/en-US/forum/1/672608