id summary reporter owner description type status component version resolution keywords cc guest host 9561 Windows 7 guest freezing when using Java application AoS "Hello, I've been experiencing random VM freeze for a couple of months with different Virtualbox releases but have now been able to reproduce the problem --> the machine hangs when starting a specific Java/ASP application on the guest. Host is running Ubuntu 11.04 64 bit Guest is running Windows 7 64 bit The symptom when the freeze occurs are the following: - VM unresponisve (mouse icon doesn't change, screen freezes, ...) - if I resize the window, the screen/display becomes ""scrambled"" (see screenshot) - Virtualbox log doesn't indicate anything when the system freezes - Only way to solve the issue is to power off/on the VM I tried a couple of different things (like disabling 2D/3D acceleration, nested paging, ...) but without any success." defect closed other VirtualBox 4.1.2 obsolete Windows Linux