Help Screen not rotating anymore in any application?

[onilink]

Today randomly my phone has stopped rotating when in any application, from the browser to messages to mail. I don't know what could have caused this, as I have been using it normal ever since I got it and not messed with anything. Running stock froyo, does anyone know of this and if there is a way to fix? I already tried disabling and enabling autorotate from the settings off and on a couple of times and nothing.

 

[Cubanjinx]

Give it a good old battery pull....that's where I would start