Synergy, OSX client, Windows 7 server - No mouse on client

I have the following Synergy setup:

+------------++------------++------------++------------+
|     Mac    ||   Win 7    ||  Ubuntu 1  ||  Ubuntu 2  |
|c           ||s           ||c           ||c           |
+------------++------------++------------++------------+

Mac: OS/X Tiger 10.4.11 (G3)
Win 7: Windows 7 Ultimate x64
Ubuntu 1 & Ubuntu 2: Desktop 10.10

Now, everything works nicely between the Win7 server and the two Ubuntu machines.

What doesn't work is the Mac.

I am running the very latest Synergy (1.4.2, downloaded last night).

As far as the Mac is concerned everything should be working fine:

Synergy 1.4.2 Client on Darwin 8.11.0 Darwin Kernel Version 8.11.0: Wed Oct 10 18:26:00 PDT 2007; root:xnu-792.24.17~1/RELEASE_PPC Power Macintosh
Unable to connect to pasteboard. Clipboard sharing disabled.
2011-03-22 09:32:56.725 synergyc[406] Can't register screen saver connection 'com.apple.ScreenSaverDaemon'
started client
connecting to '192.168.0.202': 192.168.0.202:24800
connected to server
entering screen
leaving screen
entering screen
leaving screen

But it's just not interacting with the display at all (mouse doesn't move, keyboard does nothing).

I have tried running ktrace on synergyc and examining the dump, and the only clue I found was that it was trying to interact with the AccessibilityAPI which was disabled at first. Enabling Accessibility has had no effect whatsoever (it has only stopped the failure to open /var/db/.AccessibilityAPIEnabled in the ktrace dump)

Anyone managed to get this to work in OS/X Tiger yet?

I used to run the server on OS/X and have the windows / unix machines as clients, but as my Windows is now a laptop I'd like that to be the server.

One thing you could try is older synergy versions for the mac.