Hi Tim,
yes, you're right.
that brown lines disappeared when i turn all datums off.
and in our PCs, we saw red, green, blue lines also. it was the spin center.
but in our case, it didn't work simply changing VGA/VGADriver/Moniter, etc...
anyway, i'm so glad to find the people who suffered the problem what i'm suffering. we got hope.
thanks, Tim
pwj