Is there any difference between reinstal the software by Nokia Software Uploader and reflash using a random software?

Your problem is like mine!
Did u get it fixed?

hi i have the same problem, i bought my N900 in other country and dont know how apply the waranty. the screen touch non response at top and right side, can´t open the application menu.
I fix the problem pressed the top back corner from the screen and only whit mi nails can press the menu.

HELP!

I don't want to start new thread 'cause i'm having the same problem,
touchscreen is not working AT ALL. Keyboard is working fine though
cause when i press the keyboard in goes to my contacts.

Here's the last thing I did last night before waking up this morning
noticed that the phone freezed up on me:

*phone is on google chat and facebook chat. I still recieve
fb chat messages but unable to click them

*phone is on silent mode

*calendar is set to alarm 12:00 noon

*the only thing i installed from extra devel is MAPPERO
& the app where you can switch on tablet mode and it
was installed like a month ago and is working fine.

* i can move the background HALFWAY but it won't go all the way
to the other background.

*x terminal is working by pressing Ctrl + Shift + X

I woke up and the screen looks it froze on while the calendar
alarm sets off, i can see i have a new message(i.m. or text, idk).

That's about it. You think it's a BUG or something?

Any kind of help will be greatly appreciated, thanks!

Miraculous worked for me:

I had a similar trouble and I don't exacly how I fix it up. It's weird but it's true.
Let me say what I think that solve the problem (Anyway I'm quite sure It was a software problem):

Refreshed the P.R 1.3 with the software updater. At first I tought It was useless but then I let it turned on, offline, for like 30hrs without touching it.After that everything was working (slowly) fine! I mean after my screen star to work again, without problems, I noticed a slowlier performance. Just that.

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

i figured out that the phone got back to his old state no touch is working at all ?

this is so confusing

it is called corrosion. corrosion in circuit boards can cause pretty weird behaviour but in the end it is still corrosion behind everything

ok , how can i fix this problem ?

where are you people ?

anyone respond please