Yes right, but you know, i thinks Microsoft should just cleanup the OS (no backward compatibility) and provide free vm's from Dos2/3/5 to Windows7 In that way

Yes right, but you know, i thinks Microsoft should just cleanup the OS (no backward compatibility) and provide free vm's from Dos2/3/5 to Windows7 In that way MS do not have to care anymore for older software and security problems. EDIT: Why the down-vote? A lighter OS would make a lot of sense.