I think this a new feature of iOS6.. I'm noticing that many of my apps are using a LOT of storage when I wouldn't expect them to. For example, BeejiveIM is using 119MB. The app size is 11.6MB, while documents & data are using 107MB. I have deleted all chat sessions, and was wondering where this 107MB might be. How do I clear it? Would deleting and reinstalling the entire app fix this ?