Error Logs with +1 widget

We have a 13MB error log comprised of the following:

[08-Mar-2012 12:41:16] PHP Fatal error: Uncaught exception 'apiServiceException' with message 'Error calling https://www.googleapis.com/plus/v1/people/101117907057345476570/activities/public?maxResults=5&alt=json: (403) Daily Limit Exceeded. Please sign up' in /home/topsecret/public_html/wp-content/plugins/wpmu-dev-plusone/lib/external/google/io/apiREST.php:99
Stack trace:
#0 /home/topsecret/public_html/wp-content/plugins/wpmu-dev-plusone/lib/external/google/service/apiServiceResource.php(144):
apiREST::execute(Object(apiServiceRequest))
#1 [internal function]: apiServiceResource->__call('list', Array)
#2 /home/topsecret/public_html/wp-content/plugins/wpmu-dev-plusone/lib/class_wdgpo_google_auth.php(98): ActivitiesServiceResource->list(Array)
#3 /home/topsecret/public_html/wp-content/plugins/wpmu-dev-plusone/lib/class_wdgpo_google_auth.php(86): Wdgpo_GoogleAuth->get_gplus_feed('101117907057345...', false)
#4 /home/topsecret/public_html/wp-content/plugins/wpmu-dev-plusone/lib/class_wdgpo_google_auth.php(105): Wdgpo_GoogleAuth->get_gplus_data()
#5 /home/s in /home/topsecret/public_html/wp-content/plugins/wpmu-dev-plusone/lib/external/google/io/apiREST.php on line 99

Any ideas?