Question: I want to use ruby-2.0.0-p247 in OpenBSD-5.2 that works on QEMU.

* dmesg of my OpenBSD-box is here -> <http://pastie.org/8111667>

And, I want to use rbenv and ruby-install for installing ruby.

Okay, I installed rbenv and ruby-install into my OpenBSD-box.
But, I've seen an error when building ruby.

```
# rbenv install ruby-2.0.0-p247

```

* Response for this command is here -> <http://paste.ubuntu.com/5845506/>

Why I've seen it? Tell me please.

Best regards.

::: Postsctipt :::

* I don't want use Vagrant because some cause.

Answer: 
Yes, the `Page_Load` event will fire when the user presses the `Back` button in the browser. So if you put the correct session checking logic in the `Page_Load` of any any member pages, then you should be good. This will account for the scenario where the user logs out, thus killing their `Session` or if there `Session` actually expires from inactivity.
Don't do it. Attempting to disable back-button or any browser functionality for that matter is not a best practice.

For avoiding access after logout, try to transfer to another specific "you are being logged out" page after clearing session. In that "you are being logged out" page do a javascript `window.location.replace` back to your login page.