Since last Monday my syncronisation to Outlook has stopped working.

If I try to connect using Bluetooth to my PC (where I am using Vista) I get a message 'Attention Required', 'Port not available'.

On the PC Windows Mobile Device Center first says 'Connecting' but ends up with 'Error'.

When I have the Treo in its cradle, connected to the USB port, it does not seem that the PC recognises it. It does not show up under My Computer in Windows Explorer.

I did upgrade my Norton 360 to V 3.0 last Monday, but even if I turn off the firewall I get the same error.

On the PC I have ticked all the boxes in the Connection settings.