Dual monitor issue in vertical arrangement

[Joc]

Hi to all

I have encountered some strange behavior on dual monitor screen in vertical arrangement. I have a laptop (primary screen, 1280x800) and a DVI monitor (secondary screen, 1920x1200).

The issue goes like this: if I position* the secondary monitor above primary then the full screen preview (F11) works crappy (and also picture preview). If I position the secondary monitor to the right of the primary monitor, then ewth works fine.

Any ideas why?

I can submit some screen-shots if anybody instructs me how to do that.

* - here I am referring to Display properties / Settings (WinXP, SP3)

Tnx, Joc

[Joc]

Ok. Weird. I tried to reproduce working it in side/by/side mode - but it does not work anymore. In the secondary 1920x1200 screen the image is always drawn up to 3/4 and then there is some unpainted belt at the bottom.