Weird, the way amd drivers are, I wouldn't doubt the trouble, I had major amd goofup troubles with anything between 13.2 beta 7 & 13.4/13.5beta2 for my 5850's. No sensor readings on second card, overclock on second card failed, weird shit. I just stopped updating for a long time, and decided it was time to try 13.5beta2, and what ever they did, it solved the issues I was having. Maybe skip a few months again for your issue and see if the problem gets resolved down the road. ionno, bud.