Comment 19 for bug 1035208

it's possible that all problems are fixable by finding out the right synaptics parameter:
  xinput --list-props "ETPS/2 Elantech Touchpad"
will give you a list of tuneable parameters. Don't ask me which one to choose.

"Doesn't move anymore2 may be related to wrong "Pressure"
"Doesn't want to stop scrolling" sounds like "Two-Finger Pressure" or "Coasting" problem

If someone finds out better values than default, please post a note here.