Did you hit refresh next to the bar graph or power cycle? The categories below that won't show all data on the internal sd, there are partitions and hidden files and folders that don't factor in to it, it'll never equal the 11.30 gigs.
Sent from my Optimus G using xda app-developers app
If you have games that store a lot of data, or download a bunch after install it won't show in the settings screen.You may find it in android-data or android-obb.