Although using ndiswrapper does get the wireless working, it prevents the NC10 from restarting / rebooting. Other problematic issues such as power management and wireless range are also presenting themselves. I therefore decided to uninstall ndiswrapper using the Add/Remove option in the applications menu, disabled the wireless and rebooted successfully(!).
To install the latest Atheros drivers use these instructions: https://help.ubuntu.com/community/NC10#Wireless%20Networking%20-%20Atheros