Hi,
I run Vista Ultimate SP1 on an Acer TravelMate 8215 with an external monitor connected via the VGA-interface. I usually set the layout of the monitors so that the external monitor is located above the laptop monitor. When the screen saver engages this layout seems to be reset to having the external monitor to the right of the laptop monitor. If I use the DVI-interface, it works as it should.
Brgds
Jonas