Is anyone else running the GPU app?

Initially, they all say they'll take 00:19:19. One is pending validation which took 1h and 6m. The ones that my (3) HD5870's are running now say their completion time is 4 hours. I also noticed that the wu's are only using from 6% to 10% of the CPU. I'm wondering if it just doesn't like my GPU's... they are 6 years old.