MozBackup is a simple tool to use which safely backs up your profile in any Mozilla application – Firefox, Thunderbird, Mozilla Suite and Netscape.

Once installed, simply run the application and follow the on-screen instructions. You'll be given the opportunity to select the individual elements of a profile that you want to save.

These elements include bookmarks, history, extensions, passwords, cookies, form details, downloaded file lists, certificates, cache, emails, address books and sidebars.

Backups are saved in ".pcv" format which is basically the same as the Zip format, and the backups can be password-protected for added security.

Restoring of saved profiles is just as easy, and in the same way as when backing up, you can select the individual elements to restore.