I just upgraded my Windows 7 installation on a Lenovo Thinkpad W500 to Windows 8 Pro. Following the upgrade my cursor frequently does not respond to finger movements on the Synaptics trackpad. It either takes multiple attempts or a change of finger direction to get the cursor moving. The problem only happens when starting from rest; movements in progress are not impacted. Mouse and TrackPoint movements work fine. I've confirmed that it is not a sensitivity issue; the problem is consistent regardless of sensitivity settings and the firmness of my motion. Finally, following the problem I downloaded the most recent Synaptics drivers from the Lenovo site but the problem remains the same.
Update: I am able to reproduce the problem consistently as follows:
- Move cursor to an arbitrary location
- Pause momentarily, taking hand off the trackpad
- If I try to move the cursor specifically in the down direction, it sticks. Other directions ok.
I installed Windows 7 side by side and the problem does not exist.