We've just installed Exchange 2010 and I started migrating users over from Exchange 2003 a couple of weeks ago.
One of my fellow IT people has been using Office 2010 for many months, and relies heavily on her To-Do pane to track her tasks. After moving her mailbox, no items show up in the To-Do pane. If she goes to tasks, they're all there. If she changes to cached mode, everything works properly. I've already tried the /resettodobar switch. Any other ideas?