Why isn't VirtualBox restoring my saved machine state?

Please check if you have full write-access to the directory where the VM is saved. Please also answer these questions:

• Are the VM-Files all on your local harddrive or on a network-sharing?
• What File-System is the partition formated with?
• Try running VirtualBox as administrator - does this fix your problem? Also check http://wiki.archlinux.org/index.php/VirtualBox for information about archlinux&VirtualBox