You wrote (in your message from Tue 18)
 > I have a logitech mouse man with three buttons but the middle one doesn't
 > work as it should... What do you have for your XFConfig?

Some logitech mouse man mices (including mine) use the 'microsoft'
protocol, not the mouseman one...

Here's my pointer section in XF86Config:

Section "Pointer"
    Protocol "microsoft"
    Device "/dev/tty00"
EndSection


					Matthieu