Forum forgetting unread posts

[xxJohnxx]

Hi,

 

Recently I got a problem with this forum. It just forgets which posts I have already read and which I haven't. Whenever I log on (boot up PC and Firefox), it will show all the posts being read. Only when I stay online (have the Tab open) unread posts will start to show up (the posts made while I have been online).

 

I know this happened to me some years ago, but now it started to occur again.

Any ideas on what is going on? It's quit hard to keep track of the new posts manually and I start to miss out on a lot of conversations.

 

Thanks,

 

John