id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 8711,"windows guests under ubuntu 10.10 ALWAYS crash, silently and with no error message ... just a matter of time. GUI problem?",Ian,,"Every time -- EVERY TIME -- I run a windows guest under my linux host, it will suddenly and silently stop running. I have a few virtual desktops on my machine, and the VirtualBox guest (running windows) sits maximized on its own desktop. I never see the crash when it happens, i'll just switch to a different virtual desktop for a while, and when I switch back the VirtualBox guest's desktop the window has vanished. I see this crash running both windows vista and windows 7 as a guest, while ubuntu guests are not affected. It might be a GUI problem, because the ubuntu guests are running in textmode and never launch X. I'm running Ubuntu 10.10 with VirtualBox 4.0.2 r69518. When I run ""VirtualBox -startvm 7"" or ""VirtualBox -startvm vista"" on the command line, the crash does not produce any helpful error messages. In fact, they terminate normally and return ""0"" to the shell. There are some output messages while the VM runs, but they don't seem to be related to the crash. They are all this message: Qt WARNING: X Error: BadAccess? (attempt to access private resource denied) 10 Major opcode: 33 (X_GrabKey) Resource id: 0x5600105 ",defect,closed,other,VirtualBox 4.0.4,fixed,,,Windows,Linux