FF.net deleting favorites?

[Dina Lerret]

In between my bookmarks being destroyed and the history of links being
'obliviated' by Firefox (my settings are suppose to have at least
sixty days - not one day), I now find all my favorites bookmarked
under FF.net are gone.

Out of curiosity, does anyone remember a notice about disappearing
bookmarked favorites at FF.net?  Granted, I very rarely log-in but...
do we have to periodically log-in to keep our favorites?

Dina