Thanks for replying Zenox, seems you were right on.
Until I read your post I forgot that I had upgraded my driver to the Catalyst 13.10 beta driver.
Once I reverted back everything is fine again.
I fairly sure the problem was The 13.10 Driver, as it has a new feature called Frame Pacing.
Frame Pacing syncs the Crossfire setup and really cuts down on micro stutter.
I really like it , shame it breaks C2. I really hope it's not a problem when the whql 13.10 driver get released.
Regardless, I probably would have been stuck on this one for a while so thanks a bunch,:) <img src="smileys/smiley32.gif" border="0" align="middle" />