I've installed Mavericks DP 1, everything worked out of the box except sound, used kext from Mountain Lion to enable it, at this point Shutdown and Restart working fine, but as install RT2870USBWirelessDriver.kext to enable my USB Wi-Fi, shutdown and restart stop working properly, system shutdown but cpu fan keep spinning and Wi-Fi light keep blinking, for restart I have to press restart button, if I uninstall RT2870USBWirelessDriver.kext shutdown and restart restore to normal. Other USB devices like keyboard, mouse and mass storage are working fine without any shutdown / restart issue.
Any sugesstion / solution for this problem?
Here are my hardware:
USB Keyboard & Mouse