jfairfull on "[Plugin: Jetpack by WordPress.com] After the Deadline Errors"

When I try to do anything spellcheck with Jetpack, I get this:

GENERAL
400
At: http://kmdgideas.com/skyhigh/blog/wp-admin/admin-ajax.php?action=proxy_atd&url=/checkDocument

Is it supposed to have something besides "/checkDocument" in the URL parameter? Any help is appreciated! I have all plugins except Jetpack disabled at this point.

http://wordpress.org/plugins/jetpack/