Quick q: why do I not seem to be able to log out? This is a semi-public computer, I must admit I never bothered trying before but I probably should. However, when I click on "Log Out" it comes up with the 'cleared my cookies' message, but when I return to the main screen I'm still logged in. I apologise if this has been dealt with elsewhere.
SOME computers seem to have trouble, but it's impossible to replicate. You can always go to IE options and clear the cookies.