I installed VirtualBox to try it and then uninstalled it. I then installed VMWare Fusion 3.0. Does anyone know any issues I will have since I removed a VM and installed a different one. A colleague of mine told me I could have OS/hardware issues since a VM changes system configurations below the software level. I do not seem to be having any issues so far. He advised I should have re-installed my OS after deleting the VirtualBox VM. Please advise if anyone foresees issues. Is there anything I can check to determine if I have issues with my MacBook Pro UNB 2008. Thanks.