This will quieten your jumpy mouse:
In the terminal...
Code:
sudo medit /usr/share/X11/xorg.conf.d/50-synaptics.conf
Locate:
Section "InputClass"
Identifier "touchpad catchall"
Go down to line #13;
MatchIsTouchpad "on"; and hit
<Enter>Paste in the following text that you had previously copied by highlighting and
<ctrl><c>.
Code:
Option "VertResolution" "100"
Option "HorizResolution" "65"
# disable synaptics driver pointer acceleration
Option "MinSpeed" "1"
Option "MaxSpeed" "1"
# tweak the X-server pointer acceleration
Option "AccelerationProfile" "2"
Option "AdaptiveDeceleration" "16"
Option "ConstantDeceleration" "16"
Option "VelocityScale" "32"
...make it pretty, and save and reboot
These can be adjusted...or you could use gpointer-device-settings that zenfunk recommended.