Anyone here have issues with dumping?

Yep, this happened to me too. I ordered a decaf pumpkin coffee with skim milk and splenda and sugar free syrup. Well, the pumpkin syrup ended up being regular and ohhh my goddd. I felt like I swallowed six balloons and was in the bathroom almost all night long. I'm two weeks post-op and I was very surprised. I too revised from a band, which had no dumping whatsoever for me at all. It was definitely a new experience, that I am hoping not to repeat. Ever. 

Yes, I have too. Mostly due to sweets or larger amounts of other simple carbs. I think some of it is though that I've just not been consuming many sugars and when I do on the off time, my body just freaks out a bit. I get light headed, nauseous, and a little while later, I feel better again. I really don't mind it though, it keep me in better check on those things I don't need to be eating anyway. I think it has eased up over time though too, so now it's not as bad as it was at 4 months out.

Since you asked, I don't experience dumping because I don't eat or drink sugary things.  I also don't eat greasy foods.

Do you have this problem when you drink protein shakes other than something from the Slim-Fast range?