Touchpad self generates events

[jpalus]

I've noticed it a couple of times already after longer use of PBP: touchpad starts misbehaving like cursor is not moving correctly, spurious button clicks are made etc. Now that it happened again I've run xev moved cursor over the window and observed without touching touchpad. Small excerpt:

Code:

ButtonPress event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31950669, (440,132), root:(1403,155),
    state 0x0, button 1, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31952637, (440,133), root:(1403,156),
    state 0x100, is_hint 0, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31952685, (440,133), root:(1403,156),
    state 0x100, is_hint 0, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31952725, (440,134), root:(1403,157),
    state 0x100, is_hint 0, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31953101, (440,134), root:(1403,157),
    state 0x100, is_hint 0, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31953285, (440,134), root:(1403,157),
    state 0x100, is_hint 0, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31953813, (440,134), root:(1403,157),
    state 0x100, is_hint 0, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31953861, (439,134), root:(1402,157),
    state 0x100, is_hint 0, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31953917, (439,134), root:(1402,157),
    state 0x100, is_hint 0, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31953957, (439,135), root:(1402,158),
    state 0x100, is_hint 0, same_screen YES

MotionNotify event, serial 32, synthetic NO, window 0x2c00001,
    root 0x22b, subw 0x0, time 31953973, (439,135), root:(1402,158),
    state 0x100, is_hint 0, same_screen YES

  
On average it's about 4 events a second, including micro motions by 1px, no motion at all (same coordinates) or button clicks -- it's actually extremely hard to type this comment now when it happens.

Anyone noticed similar thing? Any clue how to fix it?