User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.2) Gecko/20090803 Fedora/3.5.2-2.fc11 Firefox/3.5.2 Build Identifier: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.2) Gecko/20090803 Fedora/3.5.2-2.fc11 Firefox/3.5.2 I put a good hour or so into creating a page on a media wiki. A flash page on another tab in firefox brought the whole browser down. I brought firefox back up and restored session, and the mediawiki form i had been working on was restored, completely blank. 1 hour's worth of work lost. Reproducible: Didn't try Actual Results: The form wasn't restored. I was expecting it to restore my data.

Was the form on a https page? By default we don't save form data for those. In about:config you can change the value for browser.sessionstore.privacy_level. The default value is 1. // on which sites to save text data, POSTDATA and cookies // 0 = everywhere, 1 = unencrypted sites, 2 = nowhere

Yes it was. Why don't you save form data for them? The form isn't private because of the content in it. The form is private because of session authentication data I think.

I think the idea here is that we don't transmit the data in unencrypted, so we shouldn't store it on disk unencrypted (unless explicitly told to do so). See other bug & linked bugs from there for a better explanation and reasons for/against.