JSI Tip 8009. When using Windows XP Tablet PC Edition, the mouse pointer, or pen pointer, may unexpectedly move, or briefly stop working?

You will experience the subject behavior when the taskbar is engaging or disengaging from auto-hide mode.

If Auto-hide the taskbar is enabled in Windows XP Tablet PC Edition, the Tablet PC Input Panel component causes a 1/3 second delay of the mouse or pen pointer.