Stuck/Frozen Pixels and warranty replacement

HI,

This is my second iphone 3G and a stuck pixel has just popped onto my screen and i was wondering if one pixel will warrant a replacement. I would leave it for a few more weeks to develop more but my previous 3G also had the same problem and it just got worse. My extended warranty is also set to expire on the 26th of this month and I didn't know wether to call apple again or if they wont replace a phone with 1 stuck pixel.

So basically i would like to know if my phone warrants a replacement, before my warranty expires?

Thanks.

btw, there is no apple store near me.