Should call duration show up on the "first" "main" screen?

I recently implemented the event-logger tweak. If I select the details of a call I get the duration, but I would like to see it on the main screen. There's certainly enough space. :-)

Is this because I only have 5 calls with duration, and 100s without? should I delete the database and start over?

I appreciate it may not be economical to modify the code for the 6 of us with call durations, but I can hope.... :-)

Thanks!