We had identified and fixed the issue that we believed was causing the excessive CPU usage with the Network Extension app but as many of you are still encountering the problem there is obviously something else going on, something that we've so far been unable to reproduce.
We've started this thread to collect and collate the details on the occurrences of this on 10.0.4 and as a place to post your SDUs.
We still believe that network connectivity issues and the high CPU are unrelated as the Network Extension app is not directly involved in network activity, as it behaves as a watcher to the actual network extension which is what performs the actual interception.
Thank you for your continued feedback and your patience.
