Firefox sync seems to setup correctly, but it never finishes completely. I have tried resetting sync several times... Uninstalled Firefox, reinstalled, reset sync again... Tried another Full Upload of my Desktop's bookmarks, etc up to the sync server, and then another Download to the Laptop, but only a certain percentage (less than half) will make it down to my Laptop. How can I find out what is preventing the complete set of bookmarks from syncing correctly?