I ran into the same problem the other day. Not sure if this can get fixed but a workaround is to post your pictures at an image storage site like Photobucket or Imgur. When posting pics for the forum, you will be posting the URL or link to the pic and not the pic itself. I have not actually done this yet so hopefully someone will chime in with the details.
You can also upload without creating an account on imgur. Gives you a direct link to the picture that you can copy and paste into your post. It's useful for random things you don't necessarily need to keep.