Hello. Since about one month - after having installed OS X Mavericks - about once every two weeks my MacBook Pro disconnects from the internet and the Wi-Fi menu in the menu bar doesn't respond (I get a spinning wheel of death if I click on it). I have to reboot to temporary resolve the issue. Also, if, after the network as stopped responding, I put my mac to sleep it fails to wake and it reboots (see log below).