Love these latest versions of Chatter. The summary view is extremely useful

One tiny tiny issue: A friend likes to put a in the From field in Outlook Express connected to Hotmail. This causes the actual From field to become "Friend :\)". Notice the "\" escape character. The web interface and other email clients correctly display it as "Friend " but Chatter actually displays the escape character, killing the smiley and changing the field in a quoted reply.