ok, just tried it on my computer. took about 20 seconds and it worked straight away.

first i set the audya up:
Menu -> Midi -> Utility -> USB Midi: [ON]

plug the audya (rear usb) into my laptop

windows found the audya straight away.

I checked in windows control panel and the Audya had automatically been selected as the midi device.

Loaded sequencer on the computer, works perfectly.

Maybe you either have a problem with your USB cable or your computer has a USB issue?

here is what i see on my computers device manager:

[IMG=http://img20.imageshack.us/img20/6494/deviceh.jpg][/IMG]