Flutterby™! : In this age of dynamic languages which

In this age of dynamic languages which protect ourselves from raw pointers, and widget sets which manager their own string storage, how are people managing secure text, like passwords?

Used to be we'd memset() out our passwords as soon as we were done with them, now... Do we just hope that the allocator overwrites them, that the garbage collector discards them, or do we just depend on memory protection keeping others from finding them?