Forum layout change?

I think this problem may be related to the nut behind the wheel (me), or maybe an iPhone setting. When I look at the forum now it has a very different layout than it did a few days ago. It looks almost like an old style forum. It's only my phone, it looks the same way as it did before on my girlfriends phone.

Is there a forum setting to switch between different views?

Since we all use nearly the same device I hped maybe someone has an idea. I am pretty sure this is some very simple fix, and that I'm a half-wit.