Originally Posted by Thom
I think there are a couple of conversation's going on here.
Most web pages ignore the agent setting and just put out the page using whatever is set.
There was apparently a recent change in Android Forum to put the page in two different formats based on the agent setting.
If you never set anything in your browser it is probably set to mobile and after the change reported by the OP the issue appeared.
Since I spend 100% of my time on IE9 it never affected me.
If you change agent to desktop you will force it to always be that way until you change it again.
You should be able to view the desktop version of the site (without changing user agent) by scrolling down to the bottom of the page and hitting "View full site". We've had some reports that this doesn't work on some people's phones, which is a bug that will be addressed soon hopefully, but it's worth a try.