Hello, I recently discovered this program and have to say it is great. My only question is can I force session tabs to stay open even when there is no active session? For instance, when i restart a machine the tab closes and there doesn't seem to be an easy way to see which one closed and open it again (short of remembering what session I was connected to).

No, currently there is no such feature, but there is already a most voted feature request. http://terminals.codeplex.com/workitem/15992