I've had a v1 blade for about six or seven weeks now.  It started out with four xxxx, but I didn't feel like sending it in for replacement as I'd be losing valuable lower-difficulty mining time.

As of the last week, however, it started getting all xxx's until I did a hard reset.  I lowered the voltage down to 1.15 and it seems more stable now, but I can never get above around 7500 MH/s and 16-17% efficiency.

Anyone have any ideas?

http://anonymouse.org/cgi-bin/anon-www.cgi/http://img822.imageshack.us/img822/6163/arru.png