On Wed, Jul 18, 2012 at 01:30:18AM -0400, Mauricio Tavares wrote: It is even worse than that if you have the same problem I have: do your boot up with the device, then do some normal things like disconnect the device, close up your laptop and go to the coffee shop, do some work on the host machine, then return home and try to get it to work again... you might have the VM totally lock up... but in any case you may well have to use FORCE to kill it so you can restart with the USB device re-attached. In my case it is a Mustek A3USB 1200 Pro which has to run off a 32b VM since the linux drivers do not work with 64b code; I run it in an Ubuntu jaunty release as that is the newest one in which I can get their package to work.