This is really weird. I have two USB connectors on the front of my computer but because they are close together, I can't have two usb leads in together because of the space in between. So I use a USB hub with four connectors on it. When I plugged my memory card into it, I got a message saying it was full, and and then another message saying that there was an error and that all data had been wiped!. When I then plugged the USB lead in direct (not via the hub), it performed normally. Can anyone explain this anomaly please. The fact that it's used via a hub shouldn't make any difference, should it?