Twice now I've had Parallels completely freeze after inserting and connecting to a USB thumb drive. This is in 3120. I just updated to 3150 so hopefully the problem goes away... It happened again yesterday and the VM contained some software changes I really didn't want to lose. I tried suspend, resume, everything I could think of but NOTHING in the VM would respond to a mouse click or keyboard input. I have my USB set to NOT automatically connect devices. Some I want to be in Mac OS X, others not. But the freeze is really concerning. Luckily I stopped the VM, exited Parallels and restarted and all was fine. But whew... Not a fun way to spend a few minutes.