The "third party hosting" bug has reached me as well, all my messages were I have pictures provided via Photobucket are unfortunately no longer visible.

Time to refresh my Photobucket account, delete all photos and then close the account.

Some of the links to old photobucket pictures are slow to pick-up but if they still refuse to work you may need to copy the link locations and use them to replace those in your older posts, I think. It maybe that the link locations have changed - I occasionally find that happens to pictures in my blog.