Kensington ExpertMouse scroll ring was very unresponsive. But seems to work better when I plug a second (normal) usb mouse into my computer.

"The set of folders could not be opened. Service unavailable (or something like that)."

This Outlook error went away for me after I (1) waited 10 minutes (2) browsed to the Outlook.pst in Explorer.

height of seat surface 19.75"