Weird. I'm using the new one. It took a while to get used to, but I think I prefer the new design now although it seems to have made things a bit more complex.

Regular readers of sites in general seem to hate redesigns, but over time they seem to adapt.

 Four out of five Facebook users have yet to move to a redesigned version of the site which launched earlier this summer. It's an overwhelming rejection of a project that was said to be Facebook CEO Mark Zuckerberg's "baby."

....And then I remembered that Facebook users also hated the News Feed so much when it came out that 587,715 of them joined a group called "Students against Facebook News Feed" in just one day. Expect similar riots in September when Facebook will force its users to migrate to the new platform.

http://valleywag.com/5041300/80-percent-of-facebook-users-still-using-old-site-design

Yeah, you can go back to the old settings.

I think the first time it came up it actually asked you if you wanted to switch to the new design.