The horse owner discussions are not marking as read. Still shows bold. However, the rest of the forum does mark as read.
By default the mark general discussion is checked. Tick the mark all forums read to remove the horse owners also.
I am but you give me no information to go off of. You telling me you can't upload a pic is like a horse owner going on a forum saying her horse is lame and expecting someone to tell her why.
If nobody else is having this problem, clear your cookies and see if that fixes it. Nothings changed on the website and no one else has reported the problem so it's a little hard to track down.
If it's happening to you guys in the same part of the world, I turned off something that was interfering. Let me know if it keeps happening. Give it a little time to take effect.