Just FWIW, I have been seeing problem with ACPI shutdown on gentoo x64 guest which is running in VirtualBox (4.3.6) on Windows 7 x64 host. Here by ACPI shutdown I mean simply choosing "ACPI shutdown" command from dropdown menu of VB virtual machine console window.
Once I moved from kernel 3.11 to 3.12 ACPI shutdown stopped working. Now I test kernel-3.13.1 and it still does not work.
Just FWIW, I have been seeing problem with ACPI shutdown on gentoo x64 guest which is running in VirtualBox (4.3.6) on Windows 7 x64 host. Here by ACPI shutdown I mean simply choosing "ACPI shutdown" command from dropdown menu of VB virtual machine console window.
Once I moved from kernel 3.11 to 3.12 ACPI shutdown stopped working. Now I test kernel-3.13.1 and it still does not work.
'shutdown -h now' from the terminal works though.