That's probably it then. I'll bet most people who are struggling bought two of these at launch to run eyefinity. I recall it took a while for my 5970 to support eyefinity with crossfire. I could do single screen with crossfire fine, or eyefinity with one GPU, but not both.
My second card comes in today, so I'll at least test a few games soon enough with eyefinity. Are you using the OSD from MSI Afterburner to judge GPU usage?
Yes, i'm using the OSD overlay in MSI afterburner to watch GPU1/GPU2 temps and usage.
Are you using the 1/9 web driver? Just a suggestion, to save you some hassles: Get your system running in single card mode with the 1/9 web AMD driver, and disable any over volting and such in MSI afterburner. Disable unofficial overclocking mode. You can still max it to 1125/1575 (if your cards tolerate that). Over volting while in crossfire tends to be a PITA with more than 1 GPU. I just didn't have the energy to find the sweet spot and oc past 1125 cuz, 1125 in crossfire is ridiculously fast. And I can get 1125 on both of my cards at stock voltage anyway.
For microstutter: download MSI afterburner 2.2 beta 11. Enable the OSD. In your OSD settings (its the riva tuner applet in your system tray) enable the framerate limiter to 60 fps if you're on a regular LCD, or 90/120 if you're on a 120hz screen. If you combine this with ingame vsync you will not get any hint of microstutter in any games. If you have any questions on this lemme know, this is by far my favorite feature of the new MSI afterburner beta. It obliterates any microstutter on either NV or AMD cards from what i've seen.
AFAIK ccc version 12.2 will have this built in.
If you do this, disable any over volting and such you should be able to simply boot into windows and enable crossfire in CCC.
Just some hints for you Let us know how your experience goes!