Posted: 01/09/2014 at 08:24
It was our first time too, but it looks like mildew got the better of yours.
Unfortunately our pumpkin contracted mildew very early in the season, and I just kept removing all the infected leaves to try and stop the spread, it didn't completely go away but it certainly slowed it. I had three very large fruits from it for hallowe'en, which are ripening on the window sill.
I took the plant out over the weekend, which was still flowering and 30 foot long. They are just amazing plants and have such a tiny roots.