Can't assign Wacom Bamboo Touch USB tablet to Ubuntu 9.04 guest from Mac host

[Steve Lemke]

Although I can create a filter for it, whether or not that filter is enabled, I cannot seem to assign a Wacom Bamboo Touch USB tablet to an Ubuntu 9.04 guest while running on a Mac host. I can also see the Wacom tablet in the USB menu while the guest is running, but unlike other USB devices, the Wacom item is disabled. I can assign other devices (like memory card readers) without a problem. Does VirtualBox think this is a desktop HIDD device that is needed to operate the desktop system? I have tried this on a Mac Pro with a separate keyboard and trackball, and also on a MacBook Pro with keyboard and trackpad. I bought a separate USB Wacom Bamboo Touch tablet specifically so I could assign it to my Ubuntu guest but I don't seem to be able to.

Interestingly enough, I have no trouble assigning the Wacom USB tablet to an Ubuntu guest in VmWare Fusion. :-(