For some years I've been using this USB stick to move files to and from my G4 iMac (running OSX Tiger v.11). Suddenly today, the iMac has stopped allowing moving (copying) files from the usb stick to _anywhere_ on the HDD. So far as I can tell nothing has changed in my usual routine. The usb stick has not been to any unusual locations - it shuttles just between three macs that I have, and none of the other macs are having a problem with it. The USB stick mounts fine in the iMac G4, I can copy files TO the usb stick. But I cannot drag any file from the USB stick to any folder, nor the desktop, nor the HDD icon, etc. I've rebooted the iMac, and it is still misbehaving. I've checked the read/write permissions on the HDD and various folders, with no issues apparent. I've also used the Disk Utility to "fix permissions" on the HDD volume. No joy. I'm stumped! Any additional tips would be greatly appreciated! I tried searching for this problem on google and on this forum, but get lots of irrelevant hits with keywords "copy, USB, Tiger, etc." so I apologize if this problem has been discussed before.