Well it's most likely due to it being only single link and not dual-link dvi. Single DVI has less bandwidth than VGA.
Hmm, after fiddling around with it, I am able to see one monitor at 1680x1050 while connected via the DVI port.
No matter what I do though, I can't get to see the other 2 screens.
For testing purposes, I switch back to the VGA cable, I can see 3 screens.
The 3x 1680x1050 configuration is available but not selectable; selecting it gives 3 black screens :(
Out of curiosity, when I right click desktop to check screen resolution, I can see my Triple Head Setup.
However, the Matrox Display is listed as a "Generic Non PnP Monitor"
Is this correct?
With the DVI connection, it does register correctly as a Matrox TH2GO though.
Could I have screwed up the installation somehow?
I hate to reinstall from scratch but it would be a last resort if there is a chance it can fix the problem.