Navigon app question

I just got Navigon and have a few of questions:

1. Every few launches, I seem to lose the iPod playlist (usually I just 'Add All Songs'). Does this happen to anyone else? Am I missing something?

2. I like to have the current street displayed at bottom (instead of the next turn). After a turn, it reverts back to showing the next turn (and no longer shows the current street). Is there a way to have it 'remember' my preference for the current street?

3. Related to #2: when I have the bottom show the current street, the next turn sometimes (but not always) shows up across the top as it's approaching. Is there a way to have this happen all the time?

4. When GPS signal not adequate, Simulation mode is offered. After I enter into it, the app is supposed to revert to a real-time GPS view as soon as a lock is achieved but this never happens. I have to 'Cancel' out of Simulation view and restart navigation. Is this normal?