Forum Thread Cache Problem
 

I login in one of the thread page. After login, header is not change and login and password box still showing. So, I go to home page. It's already login. I go another thread and I can use quick reply. So, I go to first thread that I login. Same problem. Login username and password box show in header and I can't use quick reply. So, I use reply button and I can write. I submit the post, following error occur

Code:
Your submission could not be processed because the token has expired.

Please push the back button and reload the previous window.
I tried to clear the browser cache. Same problem. So, I Rebuild Thread cache from admin panel and It's working. How to solve that problem ? It's so trouble and it make headache to me :mad:

I'm using Safari in Mac.