Mine was one of the first 950's, and pre-recall I started to loose coolant, it was the head gasket, allowing the water into the cylinder, where it escaped through the exhaust , but after a few days, the head gasket disintegrated more, and the water entered to the oil system (oil lever increased !!), this was not the water pump seal. I must stress it was one of the first 950's and before any mods or recalls except the clutch basket which was done a few days after I first got the bike. I understand that there may still be issues with the water-pump seal, but if your bike has had all the engine recalls performed, or is post 2005, it's less likely to be head gasket.
My bike had the head bolt mod after the gasket went, and the gasket went again 1500 miles later - KTM everntually fitted a brand new (2005) engine under warranty.