synergy

Do the following (with synergy 1.3.1-2ubuntu2)

1) xandr -s 1600x1200 (or gnome display prefs ...)
2) pkill synergys
3) synergys
3) xrandr -s 800x600 (or wine StarCraft.exe ...)
4) Move the cursor to your other screen (synergy 1.3.1-2.1 on debian).

Now you can only move the mouse left and up.

The problem is that synergy warps the pointer to the center of the screen,
according to its 1600.1200 view of the world. This jumps to the lower
right corner in the 800.600 real world, and so the mouse has nowhere to go
but left and up.

The real fix is to make the X11 bits aware of screen resolution changes.
How to do, I don't know, but a hack is to define the center at (160, 100),
or (width/8, height/8), or whatever.

See request #1995156
(http://sourceforge.net/tracker/index.php?func=detail&aid=1995156&group_id=
59275&atid=490469) for a hacky patch for (w/8, h/8).