not updating left 320 pixels in second monitor

This is a wierd one. I just upgraded my monitors from 2 1280x1024 monitors to 2 1600x1200 monitors. Same card, drivers, etc.

Now whenever I have my second life window in the second monitor, the left 320 pixels of the screen don't update. this happens at the login screen, and in SL. It's not a % of the screen not updating, if I resize the window, the non updated area stays the same size. It also works perfectly in the primary display.

I've tried a uninstall/reinstall but no change.

I expect it's something due to the resolution change, but I have no idea where to look.
( 1280(old res)+320(error bar) = 1600(new res))

Here's a screenshot immediatly after login.


Anyone have a clue as to what to look at next?

--
-Kasumi Ghia-

Could you check if both the monitors are set to the same frequency and colour bit depth? So for example, both at 60Hz and 32-bit colour.