I was having a fit trying fix an issue caused by session.cache_limiter. Somehow I had set this to nocache (a long time ago) in the .ini file and this setting caused the back-button to not work. When session.cache_limiter was set on private or public, the back-button worked, but then logging out of the site did not work. I had thought that session.cache_limiter was something that should be enabled, but finally found today that turning it off (by setting it to '') fixed both these problems. So now the question for me is, when would anybody ever want to use session.cache_limiter? I was hating Php because of this problem.
