Was just sitting at my desk working on a new dripper build when my istick 50 watt just started firing. I had my Delta II tank on it, wasn't touching it at all, was like 2 or 3 feet away from me. It fired for the full 10 seconds, wouldn't react to any button presses, even the 5 click to turn it off. I got the tank unscrewed right around the end of the 10 second cutoff, but I think it continued to try to fire even after the atty was removed. The 10 second cutoff did work, and it gave me the over 10 seconds indication. I continued to try to turn it off, then it tried to fire itself again, and the no atomizer indicator kept coming up... then it turned itself off. Anybody else had this issue?! Until this happened I was really into this mod, loving the power, battery capacity, and size... but this is pretty sketchy.