Forum gone wrong

I don't know whats happened to cause this but its a pain in the rear. Its only showing one post at a time with the other posts in a tree list below it. Any suggestions on how to change it back (I've not changed any forum or browser settings)?

Better explained with a screenie:

In this topic look under the add reply/new topic buttons and you well see Options.

Click that and under display modes choose standard.

In this topic look under the add reply/new topic buttons and you well see Options.

Click that and under display modes choose standard.

Brilliant, thanks. I was searching all through 'My controls' at the top of the forum trying to find something like that, couldn't find it anywhere :rolleyes: