Here is the response from Wacom. After did this, It seems OK so far…
Thanks all you guys!
I would advise against manually deleting those files in your Program Files folder. They are not going to account for all of the driver components, so this will typically leave behind older files, causing issues. First, use the following steps to completely remove the current driver, and install only the latest. Make sure to do so only on the local administrative account:
Disconnect the tablet from the computer
Open your Start Menu and then the Control Panel
Open Programs and Features
Uninstall any listing here for Tablet or Wacom Tablet and then restart the computer
After restarting, download and install only the latest 6.20 driver from:
http://cdn.wacom.com/U/drivers/IBMPC/pro/WacomTablet_6.2.0w5.exe
Once the installation is complete, and the system is stable, connect the tablet
As always, make sure your tablet is connected directly to your computer. Avoid using USB hubs, keyboard/monitor ports, or docking stations with the tablets, as they can cause inconsistent behavior.
Then, we can check to see if there is a misplaced preference file from a previous installation:
Open your Start Menu and then Computer
Open your main hard drive, that contains Windows (probably your C drive)
Open your Windows folder
Open the System32 folder
Once here, use the search box in the top right of the window, to search the System32 folder for: tablet.dat
Delete any entries that come up here
Next, open your Start Menu, All Programs, and your Wacom Tablet folder
Open the Tablet Preference File Utility
Click on ‘Remove’ under ‘All user preferences’
See if this has the tablet working better.