Comment 1 for bug 449

The issue is that the "login/register" link at the top of each page sends you to "/+login". This means that you must use the back button of your browser to return to your previous position.

If the link is changed to be the current URL plus /+login (also handling query parameters) then things would work as expected. There would be no need to use the back button.

There is no need to do special things to cope with cacheing. The site runs over HTTPS, so cacheing should not happen except when you use the back button.