I had this problem too when I was trying to attach photos in a hp discussion thread, the first picture attached fine, when I tried the second one, I got a flood control error, when I clicked Back, everything was gone I retried a couple of times, finally gave up and uploaded the photos to Photobucket instead. I'm not sure whether this problem still exist or not, maybe others can give some feedback. Well, I can't simply upload photos here without a reason to test whether this problem will happen or not. I thought of highlighting this here but if the problem doesn't exist anymore, please disregard this message here.