I have 2 displays and just clicked on eyefinity because...I don't know. Just because.
My monitor is connected via DVI and I have a TV via HDMI. My monitor quit receiving a signal (power light occasionally flashes) and the display on my TV got shoved up, leaving a giant white bar at the bottom. I disabled eyefinity, unplugged the TV, restarted my PC, still only going through the TV.
Obviously I'm doing something wrong. I just want to forget this horrible, scarring experience ever happened. I did some quick searches and was only able to come up with problems when people launched games.
Oh, if it makes a difference it's a 7950. I feel so stupid lol. This isn't technology, it's sorcery!