When I first got my Milestone, the touch screen worked ok. After a while, the touch screen would stop working when I woke up my phone, but a reboot would usually fix the problem. Then after a few months of this, my touchscreen and capacitive buttons completely died. No rebooting, reflashing or nandroid recovering helped. After my touch screen was replaced, it was ok for a while. Then it started to stop working when I woke the phone again. A month later, my touch screen and capacitive buttons died again. Two days ago, the digitizer was replaced again, but the touchscreen still sometimes doesn't work when I wake the phone. After two digitizer died, I expect this one to die too. I'm using CM7, but the touchscreen unresponsiveness also happened on the stock firmware.