[Plugin: Jetpack by WordPress.com] Posting comment fails to load page

So, I’m trying to use the comments feature in Jetpack for the first time. The problem is that when I attempt to post a new comment it doesn’t work…

In Safari, after hitting the submit button, it just hangs at “Submitted Comment”.

In Chrome, it fails to the load the webpage entirely.
http://dl.dropbox.com/u/2105124/images/ccgaming/screenshots/Screen%20Shot%202012-08-28%20at%204.54.00%20PM.png

Here’s a link if you want to play with it yourself:
http://ccgaming.com/2012/08/test/

Is it possible our web server could be blocking Jetpack’s server?

Any other ideas about what could be happening?

Thanks for any help.

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