Running Outlook Express 6.0 on Windows 2000 all latest service packs and updates for both. Also installed is Outlook 2003. Outlook is used for Office e-mail and can not be removed. OE6 is used for personal e-mail accounts and News group access which is required for job support. I have 2 e-mail accounts set up in OE6 and the "Leave a copy on server" checkbox is supposed to be checked all the time for both accounts. On average about once a month the box becomes unchecked on one or both accounts. This is a problem because quite often I will read and delete e-mails thinking that the e-mails will be retrieveable at home from the server. When I find that the e-mails are not on the server I can look back at the office and find that "leave a copy on server" check box is unchecked. I am the only one with access to my machine and those accounts. Has any one heard of this before? I was unable to come up with anything on the MS support knowledge base. and don't think that I should be charged $ to report a bug to Microsoft through their tech support.