NLA Service...Help!!

This morning laptop working fine but this afternoon it is hanging on start-up when it gets to the Network Search and just freezes so all i can do is restart in safe mode. Check the Event Viewer and get the following message…

The Network List Service service depends on the Network Location Awareness service which failed to start because of the following error:

The dependency service or group failed to start

Service Control Manager.

This seems to be some Vista problem and nothing to do with avast

http://social.technet.microsoft.com/Forums/en-US/itprovistanetworking/thread/563b908c-aa24-4000-9b2d-b6ff02f10c56/

http://www.google.no/search?hl=no&source=hp&q=The+dependency+service+or+group+failed+to+start&aq=f&aqi=g2&aql=&oq=