After convincing myself to change my old digitizer full of scratches I ordered a new one from China. I got it to pass the initial startup tests (the ones that show up when hard resetted) but obiouvsly it was all too easy.
The only zone of the touchscreen that is working well is at the top left - center left. Otherwise I have to 1) press REALLY hard and 2) waiting about 1 sec pressing to get it recognize inputs.
Initially I thought it was some hardware behaviour, maybe related on how the digitizer's ribbon cable was solded; then I've ended in the thread that I linked.
The questions are: it's just a crappy touchscreen or there's somewhat else? It's an hardware or software problem? If that's a soft prob, do I have to upgrade to some other ROM (current is 1.12 ITA) - modify something in the registry - say some magic words? CAOS!!
Oh and I accidentally cracked my relatively better old touchscreen. Trying to unstick it from the LCD with a cutter did't was a good idea. It's ok now, just reduced to many cute little fragments.
Well, duh, hmm, it's morelike a brick now. Please. It's like a son for me