Thanks for your answers!
I have overclocked a fair bit, so maybe that's causing a few dodgy shares, although underlocking the memory speed has helped keep power consumption down and the temp around a stable 75ºC @ 70% fan speed, so I'm confident my GPU is cool enough. Could slowing the memory speed down have had a negative effect on quality of share result?
Maybe re-flashing my bios with a less aggressive OC would help?
For a newby with my kind of hash rate (420Mh/S), who's pool would you recommend for a steady payout and less stale shares?
I guess its a balance as the more people in a pool, the quicker blocks get completed, but I guess that also means more stale shares?
So would a smaller pool mean less stale shares? And then also longer block times? But more reward per person for completing a block mean overall payout / reward would be comparative to a larger pool?
Does that make sense?
From what I can gather Slush and Deepbit are the two big ones?
Who else do you recommend I look at? Obviously trust plays a bit part in the decision and being new thought that following the crowd would be the way to go.
Cheers
tictok