Layout issue on iPhone form factor

Thanks for creating this theme. It has been a great help!

We are using this theme for our company blog at
http://content.mobicip.com
One issue we notice is that there is a layout width issue on the iPhone form factor. Only about 75% of the width of the layout is visible on the screen. Tapping on the screen or pinch and zoom doesn't do anything as the width seems to be fixed.
The issue happens on particular pages and not all of them. For instance,
http://content.mobicip.com/blog shows it. So do some nodes such as
http://content.mobicip.com/content/how-setup-parental-controls-ipad
There are other nodes that don't have the problem. For instance
http://content.mobicip.com/content/effective-implementation-ipads-your-c...

I've attached screenshots to demonstrate the problem. Please review it and let me know if the issue can be fixed soon. Your help is much appreciated.