I got this too. When I removed Kompozer-portable from my sandisk usb flash drive connected to my computer, it went away. I haven't used this usb flash anywhere, *but* my computer and kompozer-portable is a trustworthy piece of software, part of portableapps which has never done me wrong. I'm also pretty careful about keeping my computer clean. I think, with me, it could be a false positive connected to kompozer-portable?