I recently got a Dell 2209WA with built in USB hub. and great i thought, i can manage the USB ports on my macbook a bit more effectively. But it seems when i pull the USB cable when i want to go portable, it gets a KP, at the moment i suspect it has something to do with the logitech wireless adaptor i have plugged into the monitor. it exhibits these issues when the monitor is turned off as well. I have another USB hub, but i pretty much use it exclusively for my external hard drives (i don't really like to keep it plugged in all the time, if powered up for some reason the drives spin up in the middle of the night even when the macbook is sleeping) and it does nothing like this when the adaptor is plugged into that. Any precedent for this, any solutions?