Hello, recently i come back to mavericks with internet recovery after yosemite crashed. I now i notice that bettery drians very fast. And it takes long to startup computer and shutdown. also in perferences i have strange option "EXTENSIONS". Also I got this errors- Problem System Launch Daemons: [failed] com.apple.awdd.plist [failed] com.apple.coreduetd.osx.plist [failed] com.apple.iconservices.iconservicesagent.plist [failed] com.apple.nehelper.plist [failed] com.apple.thermald.plist [failed] com.apple.watchdogd.plist Problem System Launch Agents: [failed] com.apple.AOSHeartbeat.plist [failed] com.apple.bird.plist [failed] com.apple.cloudpaird.plist [failed] com.apple.cloudphotosd.plist [failed] com.apple.icloud.fmfd.plist [failed] com.apple.iconservices.iconservicesagent.plist [failed] com.apple.telephonyutilities.callservicesd.plist [failed] com.apple.wifi.WiFiAgent.plist Any ideas?