Fresh install of Ubuntu 13.10 64-bit with a fresh install of Firefox 25. Firefox Sync setup worked flawlessly, except for the fact that it isn't working. I'm not encountering any errors, and when I tell it to sync the process appears to complete fine. However I never get my sync'ed data. Sync has been working flawlessly on my two other Windows boxes and my three Android devices and they seem to test fine. Oddly enough (and I'm not looking for support on it here, just mentioning) I'm having the same issue with a fresh install of Chrome as well. Any suggestions?