Touch-screen not working anymore

[Linus Gasser]

Hi,

for some time already, my Touchscreen is working really badly. Sometimes 
during input, there is an offset in where I touch, which comes and goes 
(like 1 minute you have to type 5mm above the keys, then again on the keys).

Now the touchscreen even stopped working altogether. No input is 
possible anymore!

As I'm living in a country with LOTS of dust, I wonder whether there 
could be an accumulation of it, which makes it disfunctioning like that. 
Is it worth to open up the phone and clean the screen?

Oh yes, I'm using QTmoko 35 on a GTA02 from 20080721

Linus