Ladies and gentlemen: "break my kwebforms" show begins:
DataProvider is undergoing a small refactoring (it becomes a Singleton class)
Add a method to "reopen" the connection to the database.
This will probably fix a bug with Authenticator::loadStore(), remove a global variable (ugh!) and provide a saner interface.

Drawbacks: not thread-safe, a little bit more complex introduces a serious point of failure...