Firefox 3 is a reliable Internet browser used my large amount of surfers,Mozilla firefox have recently registered there name in the Guinness record for most number of downloads in a day.So if you are using Firefox browser and want to reinstall it once again then you have to backup your profile and password.Why backup? Because if you backup the data then you can import the data again to freshly installed Firefox.The reason can be different for backups, if you are on your way to reinstall the firefox then here are some measures to store the whole information.
Backup/Export firefox passwords
This firefox addons backups the saved passwords of firefox browser.It allows you to export 
your saved passwords.This is called as Password Exporter which is compatible with Firefox 3.and thunderbird.
The logins will be exported to an XML (Extensible Markup Language) or CSV (Comma Separated Values) file.After fresh installation you can import the files once again.
First,download the backup addon.Restart your firefox 3 and Select Tools –> Add-ons.Search Password Exporter Add-ons.Now click on options and export or import your firefox passwords.
Backup Firefox Profiles (Bookmarks,history,contacts)
MozBackup is a simple firefox utility for creating backups of various browsers like Mozilla Firefox, Mozilla Thunderbird, 
Mozilla Sunbird, Flock, SeaMonkey, Mozilla Suite, Spicebird and Netscape profiles.
It allows you to backup and restore bookmarks, mail, contacts, history, extensions and has many more feature.Using Moz back up is easy,run the application , select your choice and choose the profile to backup.Like wise,you can also restore the data of bookmarks,history and contacts of you browser.In short you can backup and restore every Mozilla application using Moz backup.
Download Mozbackup Firefox utility
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wow that owould be easy when working with mozilla firefox but after back how to restore using mozbackup?
Try out XMarks (formerly known as FoxMarks). It can sync and backup bookmarks and passwords to a server.
After wasting a lot of time with MozBackup (it has a bug and would not restore), I finally saved a copy of my “original” profile on a USB drive, copied it into Firefox profiles folder (Start, Run %appdata%, Mozilla, Firefox, Profiles), then used Profile Manager to create a new profile, then went back into the profiles folder, moved the new default profile to the desktop, and renamed the “original” profile with the same file name as the new one that went to the desktop. Open Profile Manager again and select the renamed “original” and started Firefox. Got an error message about registering Chrome, but then Firefox opened with all my old settings!
@Diamonds – You can try this method http://blogote.com/2008/ideas/browser-ideas/mozilla-firefox-3-crashes-uninstall-buggy-addons-and-themes.html to uninstall addons-extensions manually
How do you backup manually? Sorry, but I don’t trust 3rd party programs with my passwords.
Wish i had known about these before i formatted my computer. I tried copying the Profile Folder which was in the Application Data directory but it didn’t work.
thats a nice post i like doing backups we never know when the monsters are free =/
A very nice utility
Thanks