I think I've stumbled upon more Dr Web compatablility issues. SpiderGuard, with archive scanning enabled, prevents u3 drives from lauching automatically. The U3 'launchpad' seems to get hung up and fails to launch, after the password is entered. It makes no difference if the u3 drive is on the exclusion list. Also, Dr Web seems to interfere with Eraser as decribed here. Dr Web interferes with the erasing of directories. Can anyone confirm these?