I running phpBB 2.0.8 as a bottom frame (top frame is a menu of other stuff.)
I'm also running ezPortal but it should not be relevant here.
When I click on "Log in" on my top green nav bar, I get a normal login page (framed) but when I then click on the phpBB "Log In" button, I lose my top frame.
I looked around in login.php but didn't see any obvious places which might cause this problem.
Any suggestions or solutions?