I don't know if this is the right section to post this question but ill give it a shot anyways. I'll relocate this post if nessesary.

These past couple of weeks, I've notice that while driving, an annoying squeking/loose spring noice would come from inside at high RPM (being that the car shakes more at higher RPM). Its hard to say from exactly where the noice is from but for I'm sure its coming from inside towards the passenger side of the car. Ive inspected the car for lost mice but nothing. The only thing that came to mind is a loose screw in the seats or its brackets. Has anyone ever experienced something like this before?

its a 2006 IX SE.

 

I had a similar issue with my "04". Ended up finding that the passenger seat bracket, where it attaches to the drive shaft tunnel, was rubbing against the tunnel as the seat vibrated. If your noise goes away when you have a front seat passenger, I would almost guarantee this is your cause. If true, remove the seat and put a thin piece of tough gasket sheet in between the bracket and the tunnel and your noise will go away. I did this fix and have not had the sqeak/rattle for over a year.

 

So it is the seat. I havent had the opportunity to drive and hear the noice after i WDd it up but if the noice persist, i will have to follow your advice on that. The noice makes me feel like im driving my old mattress.

 

I remember reading somewhere that the squeaking noise could come from the glove box too.