These are known issues with the currently shipping version of DMI

• If you switch databases while Mail is running and you have the DayLite drawer open in the main mail viewer, it will not refresh the categories to match the categories in the new database you are connected to
• Workaround: Restart Mail
• There is heavy conflict with GPGMail. Please uninstall GPGMail or DMI, otherwise Mail will crash randomly
• If you have selected to auto-connect to DayLite when Mail launches and DayLite is doing a massive import, Mail will wait for DayLite to finish. There is a 30 second timeout on the connection between Mail and DayLite, but that timeout is established after the connection is made. This hang occurs while the connection is being made.
  
• Workaround: Force quit Mail, then in Terminal type in the following:

• defaults write com.apple.mail DMIAttemptAutoConnectOnLaunch NO

• Restart Mail