** {{bug|901527}} caused by {{bug|886886}} which landed on mozilla-central on 2013-07-22 and was uplifted to mozilla-beta and mozilla-aurora after only 5 hours on Nightly
* Firefox 20.0.1:
** {{bug|857291}} caused by {{bug|807678}} which landed on mozilla-central on 2012-12-24 and rode the trains
** {{bug|846848}} caused by OS.File not being on QA's radar as it rode the trains
=== Landings per Channel ===