My KDE hass the odd (yet quite smart) technology of receving a page twice to find the mime-type. If i knlick a link in my email program, kmail calls that url, defines the mimetype and the opens it in teh approporate application.
This gives difficulties with the one-time reset password urls. I never get to see the status message, nor do i know how/if the password is reset. All I see is an access denied message.
I do not know a solution, but think something in the line of a special short-time-session might be a solution.