The last firefox update wiped out my Speed Dials. All my dials are gone though it maintained most viewed.
A box popped up saying that the Firefox shortcut will no longer work, click to update. So I did and it wiped out Firefox completely, I wasn't able to access it without downloading again. When I did, all my speed dials were gone. It maintained the history and most viewed but not the dials. I had to redo the whole thing.
Customer support service by UserEcho