The update to 1.7.1 brought the site down. I had to rename the plugin directory after it threw an error:
Catchable fatal error: Object of class WP_Error could not be converted to string in /home/USERNAME/public_html/wp-content/plugins/stats/stats.php on line 367
Tried a complete re-download and install but same error. After the re-install it asked for the API Key and then threw the error again. I uninstalled it. Had this happen to another site yesterday with a different error that went away after refresh of the page.