[Plugin: Jetpack by WordPress.com] 302 redirect caused by random string of characters in URL

I have no clue which setting in the Jetpack options can cause this to happen, but for some reason Jetpack causes 302 redirects on my website.

When I disable Jetpack, clear my cache, use the Facebook debug tool, everything works fine and I get a 200 response code.

When I enable Jetpack, clear my cache and use the Facebook debug tool once again, I get confronted with a 302 response code and for some reason a string of 5 characters are added right after my main domain so http://www.callofduty-community.com/ becomes http://www.callofduty-community.com/SigdZ/ and this happens on every single page.

To see the error in action, you can visit https://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Fwww.callofduty-community.com%2F

Every time I load a page a new string is created.

I was wondering whether there are people who are experiencing the same and whether someone could explain to me what’s going and how to fix it.

Any and every answer is welcomed.

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