GUI usability: There is no clean way to go back

[ggzengel]

1. Apply something (i.e. firewall rules)
2. Open something for editing, because you want to verify the entries.
3. Press back and you are outside. You get a blank page with "Document Expired"

Now what to do?
1. Press F5 and reapply and hope nothing destructive will happen.
2. Repair the URL and click 5 times to go where you were last.

1. I like to have a title bar with links in it for going back.
2. Never make it possible to resend input on back button.