This isn't directly related to prolapse, but I had my third c-section two years ago. I can still barely feel my bladder - the sensation is minimal and comes and goes. I have no idea when I need to pee (it can feel like I have to go right now, and 30 seconds later, there's no feeling of fullness at all) and have come close to peeing my pants several times since the surgery. I'm also largely unable to do Kegels...can tense the muscles, but can't isolate them. This is after doing them daily for almost 25 years.
I don't have true fecal incontinence, but things aren't as tight and/or under control there as they were before the surgery, either. I have a lot of problems with my digestive system, and totally unpredictable and uncontrollable attacks of gas. I don't really want to get into it, as I'm a bit uptight about body fluids, honestly.
Anyway - these things are all related directly to nerve damage in my pelvis from the surgery. Despite the spin the medpros put on it, getting cut open doesn't preserve the pelvice area...not at all.
As far as symptoms that aren't related to bladder/bowels...I had an infected incision (probably not related to the numbness, as the infection was at the other end of the incision from the huge numb area) that took two months of daily treatment to clear up...the incision didn't close for that period. Before getting pregnant with baby-under-construction, I felt burning, stinging pain in my scar at irregular intervals - from what I've been able to find, I think it's caused by endometrial tissue that was caught up in the incision at the time of surgery - but I don't know for sure, and doubt I ever will.
So - I guess I'm just saying that a c-section really isn't protective of your pelvic region. While I don't think I've experienced any actual damage to my pelvic floor, the effects are largely the same as if I had.