Simply go to your Account Settings and change your language to anything but ‘English (US)’. If you only speak English, you can simply pick ‘English (UK)’ and it will change back to the previous lay-out.
Apologies if this has been covered elsewhere already (I didn’t find any reports on the usual suspect news sites and blogs straight away) but this is currently making the rounds on Twitter.
Obviously, it’s just a matter of time before Facebook rolls out the new UI across all territories / languages covered by the social networking service provider, so this is merely a temporary ‘fix’ for those who have trouble accepting and embracing changes. And you are in abundance.
Update: some people tell me this no longer works, but it does for me, and, from the looks of it, for most people. If it doesn’t work for you, apologies and remember, after rain comes sunshine.
Here’s a video of some cute puppies kissing each other to brighten your day: