Stats under Accepted and Stale -- the first number is total since the current instance of guiminer started on that miner, and the number in parentheses is the total in last hour.
For the verification thing, here's a quote from an old post in another subforum that may pertain to your problem.
I had the same problem today getting the "verification failed" message on 13.2 drivers and then having guiminer and every other miner crash on start up after switching to older drivers.
What I did was uninstall all AMD software/drivers, reboot and install catalyst 13.1 drivers.
Then I followed the steps listed here:
http://forums.guru3d.com/showthread.php?t=359883 and now it's working fine.
as for the stats, what do they mean in respect of blocks and my earning of coins. am I making progress or is it failing. I am not seeing anything in my account status page, obv running a rubbish hash rate but want to learn how it all works and there is a lack of explanation about
