I have an Windows Small Business Server 2003 with Exchange 2003 (6.5) SP2 and when accessing Outlook Web Access from Internet Explorer the log off feature works fine. But when I access it from Google Chrome or Firefox and click the log off button then go back to the access page it is already logged in with the same user. I assume its just an incompatibility between Exchange and these other web browsers. But is there a patch to fix this? I don't want my users to be logged in still if they use a public computer.