You have set autorun to disabled, there technically is nothing stopping other malware resetting those values, which is which is why I don't see software/registry hacks as a 100% protection solution, also disabling autorun would also be a pain in the rear for some who actually want it to work where it should, for CD and DVD, removable media, what it was originally designed for.
Which is why I have tended to suggest Flash Disenfector, which creates a physical folder (on all HDD partitions) of the same name autorun.inf and it is protected from deletion, etc. It is this which also limits its spread as these autorun.inf files on your HDD partitions would run on boot, starting its malware, also infecting clean USBs that you insert.