After upgrading to 4.4 all my Nexus (4, 7 & 10) have problems with wireless devices, all worked fine before the upgrade. After some downtime lose the wireless connection and can only be reactivated after restarting the device.
The Nexus 7 now will not connect to Wi-Fi throughout, can mount the wireless switch to 'on' in the configuration but still will not wifis available (see screenshot).
Nobody this experience? Any idea how to solve it? No wifi device is pretty useless.
Screenshot (click image for larger version)