Navigation in portrait with auxiliary cord

Love my new droid, but could use some help. Is anybody out there able to mount your droid in a car mount, in portrait, with auxiliary cord connected to your stereo, and use navigation?

When I do this, it loses GPS connectivity. In landscape mode it's OK. And with "regular" headphones it's OK (little thin wire). I've tried a couple of different cords.

The only thing I can think is that the wire on top is interfering with the view of the satellites.

I'd like to know if this is normal or if I just got a bad one. Mine is just a couple of days old, so I could swap it out. Thanks!

Thats weird. It works fine in my car. I think you should get your Droid swapped out.

Thanks masterxchief.