Logout should not include redirect to previous page

If I log in as, say, Admin to make some administrative changes, and then log out and log in as a different user, I end up at the last page the previous user visited. This is inconvenient, since I am often immediately confronted by warning or errors that I don't have the access privileges for the current page.

It seems reasonable to me that when you log out you should not expect to preserve any state of the previous session. Possibly if I logged back in as the same user I might like to go back to my last visited page, but storing this info in the URL does not work well when multiple users access the wiki from the same browser.