Outlook 2010 has a nifty new feature or an annoying bug, depending on your point of view. The problem feature? The lack of a true default account when there are multiple accounts delivered to different pst files in the profile. Outlook uses the account assigned to the pst the folder is in for new messages, not the default account assigned in Account Settings. I like it. A lot of people don't. The ones who complain the most seem to be those with multiple accounts and IMAP accounts set as default. Because Calendar and Contacts are not stored in the IMAP pst, the account that is delivered to the pst holding the calendar and contacts is used for new messages created while view calendar and contacts. What do you think?