In the 'about the Cattle Drive' page it says "We'll mail you back our comments, usually within 24 hours." I think it's safe to say that is generally true, but I think everyone should be aware of some unfolding circumstances that could change that a little.
1. The number of students submitting assignments on the Cattle Drive is increasing at a pretty hefty rate.
Word gets around! Meantime, the number of volunteers to help nitpick is increasing also, but not at so rapid a rate. There is a "peaks-and-valleys" kind of demand that can occasionally put us behind. Some days we arrive home from a long workday to find 15 or 20 assignments to grade, and there just isn't enough time to get them all out that night.
2. For those who get into the 4.x and 5.x assignments, you're finding this to be a lot more coding than the simple problems you started with. Well, these are a lot more work to nitpick as well. Allow your nitpicker a little more time to get back to you.
In no way am I suggesting that the world-famous nitpicking service is diminishing to any degree. Just keep in mind that with increasing volume and longer, more complicated problems, that the goal of "...usually within 24 hours" may have to put the emphasis on the "usually". Sometimes it may take longer, even 2 or 3 days. In
college we paid big bucks, and were lucky sometimes to see our graded work in 2 or 3
weeks! Cattle Drive is still a good deal.