All FireFTP passwords gone after auto-update

Question

For the last six months (since the Firefox madness started and they keep on taking control of my PC) I'm terrified to touch Firefox.

Problem is however, I've been using it in my business (since once upon a time it was a trustworthy application with useful extensions like FireFTP) and that installation (and plugins) holds four years of information.

So Firefox continually deletes my important data (by) messing up (or blocking/or worse: auto-updating) my plug-ins, even crashing my computer as a result.

Today Firefox killed FireFTP by (again) autoupdating FireFTP without my permission, and I did my best to disable that nonsense in about:config).

Result: none of the (over 100) FireFTP accounts can be logged on to, they suddenly all ask for a password. I do not have the time to to find all of the passwords and reconfigure FireFTP again.

How can I undo the mess Firefox created once again? That is, where are the passwords, how do I downgrade?

As a side-question, how can I make Firefox behave again? I'm the boss of my computer, not them! How can I once and for-all take back control and completely kill every kind of auto-update feature?

Update:
I've been in contact with the (very nice and helpful) author of fireFTP and as turns out, the passwords should indeed have been stored in firefox itself (sadly). This was apparently since the very beginning (according to the author).

Upon further research, the passwords appear to have been deleted by firefox during the forced update 3.6.28 to 12.

Thank you firefox!!

So here is another documented and provable proof of the MESS Firefox has created in just 6 months.

Sadly the browser (that the modern internet was built on/for) is no longer safe to use for any business or long-term personal environment: deleting data is just unacceptable.

Funny, whilst on the official support forums serious complaints that boil down to the depriving of choice are quickly done away with; on the background.. some firefox developers themselves realize that exactly this stupid move just might have killed firefox instead of saving it. See http://www.afterdawn.com/news/article.cfm/2012/07/10/mozilla_dev_admits_firefox_killed_its_rep_with_huge_amount_of_updates

I agree: the by now widely documented breach of trust (no means NO) will be almost impossible to recover from.
Apart from the fact that more and more old-school users are starting to refer to firefox as "FaceFox" (since they cater to much of their specific wishes thereby crippling the browser from being a standards-compliant tool and force those cripplings to knowledgeable users through the updates).

I wonder what fresh team (with un-tainted reputation) will build the browser for the next decade, that will take over the market the same way firefox once did: by having the knowledgeable early adopters unanimously at their side, spreading the word to their family members and friends/colleagues. Remember the time when they informed people to use google instead of king altavista (do you even remember altavista?) or the time when those people informed people not use IE6 but firefox?

So the final answer to the question is: FireFTP passwords gone (after update)? Then they are gone. Complain to firefox (since that is one of the other reasons behind the rapid update-scheme: if users don't publically complain on a large scale, then they assume everything is fine: that is their solution to saving time on testing, enabling the rapid-release cycle. (I read this 7 months ago on a official firefox developer's blog))

Answer 1

The passwords are saved along with your other firefox passwords. So, go to Tools » Options… or (Edit » Preferences… under Linux/OS X) and from there go to Security » Show Passwords » Show Passwords.

For disabling auto-update:

1. Type about:config in the address bar
2. In the filter field, enter: app.update.enabled
3. Set it to false
4. Then again type in the Filter field: app.update.auto
5. Set it to false

And also uninstall Mozilla Maintenance Service; as far as I know, it's only use is to auto-update Firefox.