id summary reporter owner description type status component version resolution keywords cc guest host 8080 Windows 7 (64-bit) freezes when running a VM and opening the Virtualbox Manager davewilliam "I was installing my guest system and then I opened the Virtualbox Manager. And suddenly my whole system freezes, oddly I'm still able to move the mouse. But that was all, no CTRL+ALT+DEL, all I can do is hard resetting my system. My hardware: [[BR]]NVIDIA GeForce 9500 GT [[BR]]Intel Q9300 [[BR]]AVM FRITZ!WLAN USB Stick [[BR]]4GB RAM My guest settings: [[BR]]Ubuntu Server 10.04 (64-bit) [[BR]]Base memory: 64 MB [[BR]]Display: 8 MB [[BR]]1 Processor [[BR]]Audio and USB disabled. [[BR]]NAT and Host-only Adapter enabled. I reproduced this bug three times now." defect closed other VirtualBox 4.0.0 fixed Linux Windows