i have my sms txts and emails split into two dif. inboxes. I hear this is a very popular thing to do with a blackberry.
Thing is, everytime I miss a call, I get two notifications of new messages: one from my txt inbox, and one from my email inbox. I then have to go to each separate inbox, click on the missed call, then exit to get rid of the "new message" icon on the top of my phone.