I just bought a Dell Latitude XT and installed windows vista Ultimate on it. Every time i shutdown; put it on standby; hibernate; etc... for longer than 10mins, the touch pad doesn't work. I have to use the touchscreen to navigate around. I checked the device manager when the mouse doesn't respond, and it is not listed in there. After i reboot my computer, sometimes ones or more, my mouse works again. Could anyone help me? Thank you very much!