Pavel Cvrcek's Mozilla Backup utility (the 1.1 Beta2 version) now supports backing up and restoring of Firebird and Thunderbird profiles. It was disappointing to find that it worked only for the Mozilla suite when I last tried it. Anyhow, it works absolutely fine and it's a great tool. Now if only there were a Linux version so I can bring my finely-tuned Firebird profile into my Linux box.

Source: MozillaZine