Comment 1 for bug 544728

Further investigation,

1st I removed the second (older) Nvidia card on the grounds to
eliminate that as a possible issue--but this did not directly solve
the problem.

I then upgraded the BIOS on my P6TD MB from what came w/
the MB to the most recent one from ASUS (501) and that has
solved the problem.

I have not tried re-installing the second graphics card to verify
that piece of the puzzle.

George