My Facebook layout has changed. How do I change it back?

[simon]

So today I was on there and it was a general layout with notifications and messages icons on the top left corner and the 'Facebook' logo on the very top left. Also the font and the style of writing wasn't rounded and 'clean'.

Then I had only refreshed by page and all of a sudden a new layout came in. the notification and messages icons were right. The 'Facebook' logo was replaced by just an 'F' and a long serach bar. Also everything did look a lot cleaner. BUT I HATE IT! I don't want it.. and I know some of my friends and even my parents have the older layout. How do I get it back w/o making another profile?
So why is it that mine is updates an the accounts that poeople I know have had for years still remains like the old one?