Guys its been at least 2 out of 10 of bitmain that were used (much dust), and also overclocked!
Are they serious? How can they have warranty when they send them o'cked?
Support also sucks, sorry.
Bitmain, any comment on this
Buy BFL.
I bought about 50 Antminer S1 units from Bitmaintech. Every time I had my unit cleaned form dust and resetted to stock speed and I was happy with it as customer. But what is happening now, with delayed deliveries of S2 units and dusted, used and overclocked S1 units is just beyond criticism.