I can understand your frustrations..
I lost 30lbs in the past 6 months and many people haven't even said a word to me about it. I also still has 70 more to go. Those that have commented on it, noticed when I had lost about 20lbs.
I have staggered at the scale for about 2 months. I'm playing around with the same 5lbs which is why I joined SP.
I put on a pair of pants today that haven't fit me in years and whattyaknow, they fit AND zippered.
Most people I have seen make it to goal, it's taken them a year or better with them being consistent, which is what it's all about.
You will complete your goals, but you know as well as I do that it doesn't happen right away.
Keep at it