Have you tried cleaning your cache?
I get this on 4 different PCs and my mobile phone, one of which cleans the cache every time I close it.
What browser are you using.
3xChrome, 1x Firefox, 1x Safari
What are your profile settings for notifications?
MESSAGES IN THREADS
Receive an alert when someone...
- Replies to a watched thread
Someone replies to a thread you are watching
- Attaches a file to a watched thread
Someone replies and attaches a file to a thread you are watching
- Quotes your message
Someone directly quotes one of your messages in a thread
- Mentions you in a message
Someone mentions you in a message
- Likes your message
Someone likes one of your messages in a thread
MESSAGES ON PROFILE PAGES
Receive an alert when someone...
- Posts on your profile
Someone posts a message on your profile page
- Comments on your profile or status
Someone comments on a message on your profile page or your status
- Comments on your profile posts for other members
Someone comments on a message you left on someone else's profile
- Also comments on a profile post
Someone comments on a profile post that you have commented on
- Mentions you in a profile post or comment
Someone mentions you in a post or comment on someone's profile
- Likes your profile post
Someone likes a message you left on a member profile page
- Likes your profile post comment
Someone likes a comment you made on a profile post
ACHIEVEMENTS
Receive an alert when you receive a...
- New follower
Someone starts following you
- New trophy
You are awarded a new trophy for passing a milestone
CONVERSATION MESSAGES
Receive an alert when someone...
- Likes your conversation message
Someone likes one of your conversation messages
ARTICLES
Receive an alert when someone...
- Promotes your thread
Someone promotes your thread into an article
- Features your thread
Someone promotes your thread into a feature
FAQ
Receive an alert when someone...
- Answers your question
Someone answers your question in the FAQ
- Likes your question
Someone likes one of your questions in the FAQ