I didn't have any problems with Siri yesterday. However, today (11/4/11) is a different story. It's been unable to get network connection for 4 1/2 hours now. None of the 'troubleshooting' seems to work ie, turning off Siri, resetting network connection, closing open apps, and rebooting. I've done it all multiple times with out any success. I hope Apple lets us know something soon, as the tech I spoke with wasn't able to tell me to try anything I hadn't already done.