What i'm seeing is the new gen of intels the i3, i5, and i7 xxxxK's are having the most luck. Using a i7 920 i've been mining for roughly 40 hours with not a single block reward. With another comp which is a newer (but weaker) AMD I've seen 5 rewards.
I have a suspicion. It's hot here, and the 920 runs really hot (89ish under full load), and this may be causing some errors. Because this gui doesnt give us any relevant info theres a good chance that its dropping a lot of work due to those errors. So everyone whos not getting any rewards, check your ambient temps, and your core temps.
This would correlate to the new gen of intels as they run cooler. As well, the newer AMD case i have is much better ventilated and runs much cooler. Even though my 920 says its doing 50-100 PPS, not getting anything after 40 hours is kind of a dead giveaway that somethings not right. This miner is seriously lacking in the feature department (not even a "start mining" button, come on) but i'm sure the dev has his hands full with other things.
In short:
CHECK YOUR TEMPS
53C while mining but still no blocks after 20 hours of mining
Found second block with "new" client. Would a linux binary benefit anyone? I suppose everyone computer savvy enough to run primecoind on linux knows how to change a few lines of code though.
Compiling coin clients for Windows is a huge pain in the *** btw, i guess that's the reason no windows binary was posted so far.
Yes please! Even though I'd prefer a Windows bin. :C