I'm using Opera 9.25. I see that I have 1 new PM. so I click the link and go open my PM - but even after having read my PM when I return to the main page, the link still shows "1 new PM" - I refresh the page and its gone but I return to the homepage and its back up again.

same with posts - i will post something and return to the board and the post is not indicated.

Why is everything getting cached so much?

The caching is only supposed to affect admin pages at the moment, it shouldn't be storing the main pages. I've made some tweaks so hopefully it won't do it again.

I seen that on the admin pages myself. Doesn't bother me much. Just hold down CTRL + R to force it to reload (the page).

And Opera you need to make sure you have it set to check content every time. They have an option in their options menu for that. The default is every now and then.