Firefox version 16.0 came out, but turned out to have a vulnerability, so it's already been dropped.
If you've already updated, however, 16.0 thinks it's current and will tell you so. You need to downgrade to 15.0.1 - that may not be obvious, but it's easy when you know how.
Image may be NSFW.
Clik here to view.
Image may be NSFW.
Clik here to view.
Clik here to view.
Image may be NSFW.Clik here to view.
