I can open Windows Live Mail and see new un-read messages added to my inbox from my comcast.net email provider. When I click on them to open them, nothing happens, no error message, nothing. If I then try closing Windows Live Mail, opening Sent Items, opening Contacts, all are frozen and do not respond at all. Sometimes I get a "Windows Live Mail not responding" message. I have to re-start my computer in order to close the WLM program.