bad calibration on MacPro with Samsung and LaCie monitors

[JPhD]

I just change my Mac's model, and now calibration works bad.
(before; PowerMac G5, 2,5GHz, Leopard),

Now:

 MacPro Intel 3.2GHz, 8 GB RAM, video card ATI Radeon HD 5770, 8Gb RAM, SnowLeopard 10.6.6, 4 HD 2Tb, 2 PCIe Sonnet USB 2.0 et Fw 400, 1 PCIe NewerTech eSATA.

1 monitor LaCie 321 on DVI
+  1 monitor Samsung LED SyncMaster XL20 on mini DVI
all controlled by video card ATI Radeon HD 5770.

Calibration tools:
- X-Rite i1display2-LED-SyncMaster, (only for Samsung LED SyncMaster XL20).
- LaCie blue eye 2,  (only for LaCie 321).

Softwares:
-blue eye pro PE v.1.0.16 (c) who has Ugra-DAC embedded.
-Eye-One Match v.3.6.3 ; works only with "Easy" settings; but in manual mode it make a pink screen !!!
-i1Diagnostics v.2.5.1 (diagnostics "passed")
-EZcolor v.2.6.6

When X-Rite doesn't works, I  calibrate with:
- Datacolor Spyder 3, (works on both screens).
- Software Spyder3Elite v.4.0.1

After I always check the calibrations with Ugra-DAC v.1.3.4, to know if screens are UGRA certified or not. (I'm european pro photographer, and UGRA certify for offset printing)

With my old PowerMac G5, 2,5GHz, Leopard, the 2 screens calibrations was perfect and UGRA certified.

Since I made hardware upgrade with the MacPro Intel 3.2GHz, 8 GB RAM, video card ATI Radeon HD 5770, the UGRA certification works only with LaCie321, but no more with Samsung LED SyncMaster XL20 (who works in full Adobe RGB 1998 color space !)

Any ideas?

Regards

***
JPhD

PS: very poor support from Samsung and LaCie.

[degrub]

Is the right profile being applied to each output ?

Have you tried swapping ports on the ATI card to see of the problem follows the monitor when you calibrate ?

NEC has some issues with some of the  mini display port to display port cables not meeting spec (according to NEC).