I have seen some problems such as this if you are running a add blocker. At least on other sites.I just put up a new post and couldn't load photos. I've never had any issues before. The whole layout to starting a thread looked different and the toolbar for links, attachments, photos etc. is gone.
Strange. I've used photobucket for a long time till they decided to charge for 3rd party hosting and never had a issue.But that doesn't explain why I can't post photos by linking to another site such as Photo Bucket as a example. No matter what the size of the file it comes back with the message "remote file too large" or other err messages.