I received my Avalon batch 3 w/ 3 blades last week, and here's some of the problems I encountered.
The first set of problems seems to be with power supplies.
The first I tried was an OCZ 600W, obviously underpowered, and mining would stop as soon as I started.
So I bought a second one, a Seasonic Platinum 1000W.
I changed this to a corsair 800 GS and now it is mining for a week continuously, I even overclocked to 350Mhz.
You are totaly stupid. First you buy a 600 Watt PSU then a 1000W and then a 800 Watt? Are you fucking serious? You did recognize that the 600W is waaaay underpowered. WHY the hell do you buy a 800 watt psu?
800 watt is waaaay underpowered!!! It cant power all chips. Its not strong enaugh. It gives you only 700 watt on the 12volt line and thats not made for 24/7
If you want a psu and use it 24/7 then dont give him more then 80% load