A smart guy over at http://ubuntuforums.org/showthread.php?p=6120769 figured out that it is related to ~/.mozilla/firefox/PROFILE-NAME/localstore.rdf.
Possibly, this is an issue with migrating old settings.
A smart guy over at http:// ubuntuforums. org/showthread. php?p=6120769 figured out that it is related to ~/.mozilla/ firefox/ PROFILE- NAME/localstore .rdf.
Possibly, this is an issue with migrating old settings.