I upgraded 4 computers from NOD32 version 5 to version 6 and now whenever I try to eject a flash drive I get on the first try the message "This device is currently in use. Close any programs or windows that might be using the device, and then try again", even if no programs or windows are using the flash drive. On the second try, it works and I get the "Safe to remove hardware" message. I have all the settings in "Advanced Setup | Computer | Removable media" unchecked. Is this a known bug? Is there a workaround?