I have the same problem... We updated the wordpress site and of course the jetpack plugin and here we are with absolutely nothing working as it should be. Why bother updating our sites if you guys can't provide service for us. I have posted to support my concerns for a week now and not one single response from you guys. What the heck?
We are getting the same error message as Ykos in that it say the site cannot be found. Worse than that the option to uninstall or deactivate the plugin is not active
Worse than that we have sent many support requests to you guys and have not heard back at all. Great service your running here, not...
Please take a moment to resolve our issues as it appears that Jetpack is now the only tracking option for us to use. This being the case it seems like you would be a bit careful with the unintended results of throwing out untested updates ;-)