When I bought this USB drive it had the U3 software on it, yes, it was annoying. I can imagine it would be nice if you want to be able to use programs from a flash drive and have them retain settings or something, but otherwise it's just a pain - the fact that it mounts a CD is stupid. Just use the U3 software itself to have it remove the software (and the partition - important for being able to utilize all of the space on the drive of course). It's actually a very simple procedure. When that's done, enjoy your 4GB of clutter free storage.