id summary reporter owner description type status component version resolution keywords cc guest host 2540 Stopping VirtualBox Additions crashes guest nezroy "Using Ubuntu 8.04.1 (32-bit) as a guest on a Vista x64 host machine: {{{ nezroy@rigel:~$ uname -a Linux rigel 2.6.24-21-server #1 SMP Wed Oct 22 00:18:13 UTC 2008 i686 GNU/Linux nezroy@rigel:~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=8.04 DISTRIB_CODENAME=hardy DISTRIB_DESCRIPTION=""Ubuntu 8.04.1"" }}} The guest host was able to shutdown fine until I installed the Guest Additions. Now when it attempts to shutdown (shutdown -h now), it gets to the line: Stopping VirtualBox Additions and then crashes. The guest OS stops running and I get a Windows error popup with ""virtualbox.exe has stopped working"", with these details: {{{ Problem signature: Problem Event Name: APPCRASH Application Name: VirtualBox.exe Application Version: 0.0.0.0 Application Timestamp: 4900e8c6 Fault Module Name: VBoxVMM.dll Fault Module Version: 0.0.0.0 Fault Module Timestamp: 4900e422 Exception Code: c0000005 Exception Offset: 0000000000073310 OS Version: 6.0.6001.2.1.0.256.1 Locale ID: 4105 Additional Information 1: dfb3 Additional Information 2: dd9c0c95713b811348c36123088edffc Additional Information 3: 6e8f Additional Information 4: 768b4f65aa11fbcf9568d23b98e3d90f }}} Also attaching the log. " defect closed guest additions VirtualBox 2.0.4 fixed other other