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I filled out a lengthy form on a webpage which rejected my submission due to a server error. I can't seem to recover the form input.

Is there any way in Firefox to look into caches, history, etc. to recover this information?

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Whew! I figured out a solution -- I was able to hit the "back" and "forward" button with the "Live HTTP Headers" extension capturing incoming/outgoing traffic, and the form information was part of a POST response. (Firefox will resend form input, not sure where that's stored, but doesn't have any obvious built-in way to display it to users)

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I think it's stored in RAM, since you can hit "Back" to get back to the form with your data filled in, but I've never heard of Firefox restoring those form values after you close and restart the browser. – David Zaslavsky Sep 1 '10 at 18:47
You might want to have Lazarus [ addons.mozilla.org/en-US/firefox/addon/6984 ] installed, if something like this happens again. – Sathya♦ Sep 1 '10 at 21:15
@Sathya: consider posting as a separate answer, I'd vote it up. – Jason S Sep 25 '10 at 16:31
I've posted the comment as an answer. – Sathya♦ Sep 25 '10 at 16:49
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up vote 4 down vote

I'd recommend you to install Lazarus - it has saved my butt enough number of times.

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+1, thanks for the suggestion! – Jason S Sep 26 '10 at 13:48
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I'm afraid form contents aren't cached... Regular input fields (single line) may be saved with auto fill, yet text area's (multiple lines, the one that you probably typed in) aren't.

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