Some pumpkins have silver streaks on the leaves. That however, looks like powdery mildew. You might try using 1 part milk to 9 parts water and spray the leaves (both sides) with it to control it. This early in the season though, that's not a good sign. :(

That's powdery mildew. If you search the forum you'll find lots of posts about powdery mildew and how to control it.

gsweater- I don't know where sneed is located but it's been really wet and rainy for a lot of the country, perfect conditions for PM.

Rodney

Should I cut these leaves off? What about the leaves like the one in the middle, with burnt spots?