Hello I have have this problem since the installation of RC version. When I press shutdown button, logout works and then computer stays in "shutting down" forever... I have to shut down computer by pressing Power button 6 seconds... At startup it sometimes tell that computer was unexpectly shutted down and tries to find reason .... System Mobo is Asus M3N78-EM wit Geforce 8300 (720a? + 8300mGPU) chipset. 4GBDDR2 667mhz. Samsung 2,5" 320GB Hardisk Hauppauge WinTV-Nova T-500 Alink USB Wlan stick LG multi DVD drive I think reason might be USB related but I am not sure. I have installed latest drivers for chipset and upgraded latest Bios for mobo. In mobo backpanel there is stack of 4 USB connector marked with red colour. and they don't work. If I put eny USB device in these, windows tries to install driver and fails. In device manager everything is ok with usb ports. In event viever I can find only notifications that computer has recovered from unexpected shutdown. Is there a way to find out in events or other "debug" what driver couses the freeze?