Okay, this is a question for all you Logitech peripheral users out there. Currently I have an older MX Revolution, with its receiver connected to a hub, but one thing I've noticed is that during startup (before the login window appears) it simply doesn't function. This isn't a problem, as I can use my Apple Bluetooth keyboard to manipulate everything up to that point, including login for FileVault 2. However, I'm looking at getting a new keyboard and am thinking of the Logitech Wireless Solar Keyboard for Mac, and may be updating my mouse at the same time. What I'd like to know is; do Logitech devices using the new unified receiver work correctly for FileVault 2 login and other pre login window operations (selecting startup disk, booting to recovery partition etc.)? If so, do they still work when connected to a typical USB hub? What about if more than one device is setup to use the same receiver? Basically I just want to make sure I know of any possible difficulties in advance; for example, if the receiver won't work with a hub, then I'll have to investigate whether signal strength will be good enough with it plugged directly in my computer (since it's not in a great location). And if I can't do a FileVault 2 login then it may be a non-starter, and I'll have to stick with Bluetooth.