http://ubuntuforums.org – i just got a 1600dpi mouse, coming from a 800dpi mouse; i was able to set it to my liking on the guest account like this (based on ~/.config/xfce4/xfconf/xfce-perchannel-xml/pointers.xml) Code: ~$ cat /etc/xdg/xfce4/xfconf/xfce-perchannel-xml/pointers.xml <?xml version="1.0" encoding="UTF-8"?> <channel name="pointers" version="1.0"> <property name="HID_04b40033" type="empty"> <property name="Acceleration" type="double" value="0.500000"/> </prope (Hardware)