if you click on view and bring up the console what does it say? It looks like you are having connection issues as no shares have been accepted, also what sort of card are you using 72 MHZ is to slow to be profitable these days.
Here's what it shows in the console
Code:
2013-07-01 10:50:35: Listener for "Default": api2.bitcoin.cz:8332 01/07/2013 10:50:35, Verification failed, check hardware! (1:0:Redwood, b6105806)
I am using a HD5670 to mine
