Yahoo online quotes service has been shutted down and should be removed from the available services.
Opening http://download.finance.yahoo.com/ in a browser returns:
"It has come to our attention that this service is being used in violation of the Yahoo Terms of Service. As such, the service is being discontinued. For all future markets and equities data research, please refer to finance.yahoo.com."

I think the entire list of online quotes service needs to be checked to see what works and what doesn't.