Weird Key troubles. Advice needed.

[tonybia]

So I have my key that works just fine. Fob works and key starts the car. My wife's key fob works and will lock and unlock just fine. But you take that same key and try to start the car and it does nothing. Nothing at all. The key turns but the starter does nothing. You put my key in and it starts just fine. Another piece of information that may or may not be relevant- the drivers seat adjuster stopped working a month and half ago which includes the steering wheel adjustment too. The wife's key just stopped working a few days ago.

So what do you think the problem is? What will it take to get the key working again? What are your thoughts?

Thanks!