[winswitch] Some keys are not working (OSX - Ubuntu)

[Davide Varvello]

Hi Antoine,
 I've a problem with xpra on ubuntu and win switch on mac. Some keys are not working i.e. arrows, enter, some key modifiers like ctrl+t.

My configuration is:
win switch 0.12.20 on OS X
xpra 0.9.6 on Ubuntu 10.04.4 LTS. 

I know you don't support Lucid anymore, but I'm wondering it is something weird on win-switch.
TIA
Davide