Geocoding Web service api returns OVER_QUERY_LIMIT after only 8 queries

[sgiddings]

I have been doing geocoding to pre-fetch groups of addresses.

Since the last week, I have been getting the OVER_QUERY_LIMIT result returned after only handling 8 addresses.

So, I am still well within the 2500 requests per day and I give a 2 second pause between each request.

Has there been a change in procedure ?

I have checked the API documentation to verify that it hasn't changed since last year. My code is exactly the same as before, so I am wondering what has changed.

[Posted on stackoverflow with no response from anyone !]