Why isn't VirtualBox restoring my saved machine state?
I'm using VirtualBox 3.1.2 (on Windows 7, as my host OS) to experiment with an ArchLinux install. I use the Save Machine State option when powering down my VM so that it can be restored as it was. If I try to restore it immediately, the restore state works fine. However if I attempt to do the same after couple of hours or the next day, on launching VirtualBox, VirtualBox behaves as if the machine state was never saved, and starts the VM akin to a cold-boot.