Disable Host Time-Sync on Virtualbox

by default, a VirtualBox Host will always keep its Guest time-synchronized. U can disable this feature by performing this from terminal / DOS prompt:

vboxmanage setextradata “VBoxInternal/Devices/VMMDev/0/Config/GetHostTimeDisabled” “1″

Note: U may need to run it as "root" by typing sudo in front of the command.