I get the same when I try to update, activate and deactivate plugins.
Fatal error: Internal Zend error - Missing class information for in /wp-content/plugins/google-analytics-for-wordpress/admin/api-libs/googleanalytics/class-api-googleanalytics.php on line 5
Just heard back from Rackspace. Here’s what they had to say:
Currently we are experiencing an issue with the SAT datacenter making calls out via the WordPress API – this is being corrected however there is not yet a firm ETA.
Please proceed by retrieving the wordpress core/plugin updates from their site directly, and uploading them via ftp. This is the current workaround.
I am having the same issue