I wanted to give everyone advanced warning that the AdWords API
Sandbox's database is scheduled to be refreshed on Friday, March 27.
Following the refresh all data stored in the Sandbox will be cleared,
and you will have to recreate your client accounts with a call to
getClientAccounts().
More information on the Sandbox environment and our periodic refreshes
is available at
http://code.google.com/apis/adwords/docs/developer/adwords_api_sandbox.html
Cheers,
-Jeff Posnick, AdWords API Team