attribute_escape is deprecated.

Our logs are getting filled up with messages of: attribute_escape is <strong>deprecated</strong> since version 2.8.0! Use esc_attr() instead. in C:\www\blog\wwwroot\wp-includes\functions.php on line 3839

From my research on this, I found that WP Core is actually not at fault:
https://wordpress.stackexchange.com/questions/48200/notice-attribute-escape-is-deprecated

It’s actually the Authors plug-in that is calling attribute_escape(). Would you mind swapping those calls with esc_attr() instead.