I’ve started to receive the following message when Outlook is starting; The data file “Mailbox – Michael Jarvis” was not closed properly. I found the following link on the Microsoft support website which although has not solved the problem yet does highlight a number of other items to consider when trying to get the best performance from Outlook 2007. http://support.microsoft.com/default.aspx?scid=KB;EN-US;940226 Tags: Outlook Performance, Performance