When I switched from a PS/2 mouse to a USB one, my troubles decreased dramatically. At times, the pointer is still a little shaky (i.e. the mouse is physically stable, but its screen representation is unstable), but this shaky'ness is contained within a few pixels, rather than the entire screen (as was the case with the PS/2 mouse). Also, the USB mouse does not randomly click things either.
When I switched from a PS/2 mouse to a USB one, my troubles decreased dramatically. At times, the pointer is still a little shaky (i.e. the mouse is physically stable, but its screen representation is unstable), but this shaky'ness is contained within a few pixels, rather than the entire screen (as was the case with the PS/2 mouse). Also, the USB mouse does not randomly click things either.
I'm running 2.6.24-16-generic