i will talk about my story with the Nokia N900 and the rice

i was keeping my N900 in my pocket and it got all wet becasue the pocket was full of fibers.

it worked well immediately after that but in the next morning, the touch function stopped working completely.even if i pressed in the same spot 100 times.
i searched and found this topic , read all the posts and decided the best option is to get some rice and see what the hell is going on.

first of all, i immersed the device in rice for some time ( may be 20 hours). and then when i got it out, the screen would recognize my input in some spots(vibration activated) but wont actually press these buttons(the button is highlighted and nothing happens). so i said the rice made an improvement. i got back to it and immersed the phone another day.
when i got phone back, immediately after i switched it on the touch screen worked only in some spots and responds insanely in other spots. i got frustrated and opened the x-terminal by ctrl+shift+x . i forgot and x-terminal was opened for about 5 minutes.

And When i got back to the phone...............Everything works PERFECTLY!!!!
Touch Screen is back to normal .

Try this method it may be is the problem.

1-get some rice.
2-immerse your lovely phone for 1.5 days
3-switch on , open your x-terminal and wait.
4-good luck