My setup is as follows: iMac (with keyboard & mouse) <-- Synergy --> Macbook Pro. Synergy is a program that allows me to move the mouse and keyboard between desktops. The iMac hosts the keyboard/mouse, while the Macbook is the client. v1862 has caused XP to no longer recognize the shift, control, alt, or command (windows-key) buttons. I've restarted everything, including synergy, and even installed the newest parallels tools into XP.