My mac pro with dual monitors keep switching sides after reboot

Hi all,
I am having a really weird issues with my Mac Pro after I installed Mountain Lion. I have dual ACD Monitors. Every time I reboot, the monitors switch sides. In other words, the monitor that is in front of me with the dock would switch to the other monitor and vice versa after I reboot. When I reboot again, it switches back again. This is extremely annoying. I have had to switch the inputs on the back of my computer every time.

I hate to burst my own bubble here, but I recently added a 3rd monitor, and now I'm getting the same inconsistent monitor switching between my second and third monitors.
Here's my set up:
Mac Pro, OSX 10.8.2
2x2.26 GHz Quad Core Intel Xeon
16 GB RAM
Three Dell ST2420L display monitors
What seems to be happening now is that I get three identical 'color' display profiles. The first one seems to stay on the same monitor, but the second and third monitors now switch at random. I can't seem to get them to stay in any particular order.
Any suggestions or new approaches for solving this would be greatly appreciated!

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