On 05/04/12 12:30, James Courtier-Dutton wrote:
> Do you have any USB hubs? I have had similar problems due to faulty USB hubs.
> In my case, the faulty USB hub was somehow affecting other usb
> devices, and not just those plugged into the hub.
> My guess is that it was something causing interference.
> So, try power off, unplugging all USB devices except you trackball,
> and then power on.
A good suggestion, thanks James. There is an internal USB hub/card
reader fitted too. Unfortunately the problem still exists when the card
reader is disconnected and the trackball is the only USB device
connected to the system.
Tony
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