[kde-linux] active desktop borders and virtual desktop orientation

[Paul Kaplan]

When active desktop borders is enabled, moving the mouse to the edge of the 
screen causes the mouse to move to an adjacent virtual desktop.

What determines how the multiple desktops are oriented relative to each other?

For example, on some machines I've had 4 v-dts and only the left and right 
desktop borders were active creating the appearance that the 4 dts were 
arranged side by side (4 wide x 1 tall).   On other machines the same 4 v-dts 
are arranged in a square (2 wide x 2 tall) so that both the top/bottom and 
left/right borders are active.  In the latter orientation, I can't move 
directly from dt1 to dt3 since they don't share a common border, only a 
corner.

Paul