it happens becoz the rubber runners dry up and cause the anti trap to kick in and wind the window back down, on our civic i have noticed that when the window goes up it seems to get tighter towards the front of the door and so the windows actually starts to come up higher at the back part and becomes hard for the motor to push the window up, so i can only see any sprays being a band aid fix to the problem, getting our cars 20,000km service next wekk and they'll be told about it then-again for the 3rd time!