Mac Pro display contrast too high

I recently moved to a 2.66 ghz Mac Pro from a G5 and am finding that when I use the Display Pref's calibration settings my La Cie photon20vision display is way too contrasty. On my G5 it worked fine and the contrast was fine. I started as the Disply Pref's instruct by setting the contrast to 100% and continuing as I have numerous times before. For some reason the calibration seems skewed to be way too contrasty. I sent a photo done on my monitor and sent it to someone and they asked what was wrong as everything was so washed out and flat on their monitor.... on mine it looked fine

Hi, my info is below- I'm running Snow Leopard 10.6.8
Graphic card:
  Chipset Model:    NVIDIA GeForce 7300 GT
  Type:    GPU
  Bus:    PCIe
  Slot:    Slot-1
  PCIe Lane Width:    x16
  VRAM (Total):    256 MB
  Vendor:    NVIDIA (0x10de)
  Device ID:    0x0393
  Revision ID:    0x00a1
  ROM Revision:    3004
Model Name:    Mac Pro
  Model Identifier:    MacPro1,1
  Processor Name:    Dual-Core Intel Xeon
  Processor Speed:    2.66 GHz
  Number Of Processors:    2
  Total Number Of Cores:    4
  L2 Cache (per processor):    4 MB
  Memory:    3 GB
  Bus Speed:    1.33 GHz
  Boot ROM Version:    MP11.005C.B08
  SMC Version (system):    1.7f10

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