it looks like not only Mac users have this problem...
I run Vista and my virus is recognized properly by the system. midi, audio drivers etc. installed all properly it says in the system settings.
however, when i try to install the 3.0.3 drivers again, first the virus is recognised (asking to plug out and plug in the usb cable), then one step later the installation does not find the virus anymore
seems like a bug in the driver or something... so I get no midi signals in either direction into any app as well.