Anybody else with a 2012 Air have the WiFi stop working almost or grind to a VERY slow speed when browsing the internet? When i ping the router to see if its LAN or WAN side the ping rates are very high. Rebooting the Mac seems to make it go back to normal for a while. My Macbook Pro running 10.9 on the same WiFi Access point right next to it will load everything instantly without issue, and the Air ran without issue on 10.8 so I'm convinced 10.10 is the problem.