This question is an exact duplicate of:
If this has already been discussed or this is not the right place to ask let me know and I will delete this question.
That being said, the first two months of me using SO, the push notification system(reputation changes, comments, live tracking of votes and answer acceptance) was flawless.
However, in the past month, I notice up and again that it is clearly off. For example, I will be in a question tab and post an answer and monitor that question only to realize there have been alot of changes on this page such as votes and new answers and comments. However, to get those updates I have to keep refreshing the page. What is more peculiar is I can glimpse reputation changes for that question in another tab being updated correctly, but not for the post itself.