2.0.1 localstorage is completely messed up. It's so painful to try to do something consistently with localstorage in sencha touch that I am actually switching to phonegap for all of my localstorage needs.
Not to mention that there is no clear explanation how to employ the new uuid strategy. Just bits and pieces here and there when finally collected result in the bug of the version. Simple thing like persisting app settings in the same record with custom unique id is impossible.