My kids pumpkin is growing very nice for them. At the current rate of growth I think they will have equaled their personal best in the next two weeks. They might even have a shot at 300 pounds by weigh-off time. One issue that they are dealing with with powdery mildew on their leaves. I wrote about recently what to do for powdery mildew in an organic way. One other thing you can do is if it is starting to become a problem is to use Eagle on the leaves. Eagle is an expensive fungicide that will work better than most. It won't get rid of the powdery mildew but it will slow it down a lot.
For my kids plant I sprayed some Actinovate on the leaves this morning. My plant is showing much of any powdery mildew but I sprayed it as well.