I'll have to track this one down:
Explanation: Today is January 30, 2008, but for some reason, the message in the middle is listed by its long date, rather than "Today".
So far CircleBox has been working well for me. I thought it would be a little faster, but maybe its the number of emails I have in my inbox. There are a few minor GUI bugs I'm running into as well - like when I'm dragging messages into a folder, I often have to try twice before hovering over the folder name will highlight it.