look for the line
I changed to 0.1, save and close,
Secondly go to System\usr\idc and open file clearpad.idc
look for the line touch.filter.level = 2
I changed the level = 2 to level = 4
Reboot and enjoy.
My touchscreen now works flawlessly and I hope this fix works for others please test and report back your findings.
Remember to hit thanks if I helped you in any way.
You can try other settings, You can change the 4 , from 1-7 1 being most sensitive, not always best and 7 being the least. Each device will be different and vary in results. I wouldn't recommend going to 7 though as your touchscreen might become unresponsive.
I found 4 was the best on my handset,. Good luck.