I bought those ball less mouse ( not cordless ) that work with laser light and track its movement. Now, my mouse clicks demonstrate irregular. When I only click once, it actually clicked two or three times. So whenever I read emails, compose mails, I'm seeing double or triple sections going on. I clicked once to close a tab in Moz and it managed to close a few more tabs. :

I can't drag and highlight anything. It will jump around all crazy.

It also have that problem in Windows ( different mouse but the same model ). Here is my setting under XF86Config-4.
Code:
Section "InputDevice"
        Identifier      "Generic Mouse"
        Driver          "mouse"
        Option          "SendCoreEvents"        "true"
        Option          "Device"                "/dev/input/mice"
        Option          "Protocol"              "ImPS/2"
        Option          "Emulate3Buttons"       "true"
        Option          "ZAxisMapping"          "4 5"
EndSection
So, if it's not setup problem, I may have to replace those mouses with either PS2 old mouses or buy new ones without any known problems.

Any good models that are not that expensive??

TIA.