Have any of you used the U2713HM connected to a PS3? Do you notice it changing calibration profiles back and forth? I got one of the newer U2713H's and it looks great in Windows, but when I tested it out on my PS3 over HDMI it kept flipping back and forth between a brighter warmish tent profile to a cold dimmer profile.
Strange. Have you tried setting the monitor to Game mode? How about ports? Do you have any other connector cables going into the monitor, like a DVI or DP? There could be some weird interference and the monitor driver doesn't like it when using HDMI. Just thinking here.