My company recently purchased a 1GB SanDisk micro cruzer USB drive for me to use. These devices are great, providing lots of useful space. However when you insert the drive it automatically runs some software that "assists" you with such tasks as synchronizing and password protecting your files. Although the software may be useful to some people it isn't to me and there's no easy way to remove it .
Manufacturers should realise that they ought not to install - or run - a damn thing on my computer without my permission. Ask if you must. And if I say no don't pester me again. Ever. A better course of action is to ask me to opt-in; ship a CD along with the device (or provide a URL) that I can choose if I want it installed.
Anyway, after unsuccessfully trying to remove the software for a couple of minutes I hit Google and found that many other users had complained and some had found a solution. At some stage U3 (makers of the drive) put an uninstaller online. My PC is now clean again.
Kudos to U3 for putting the uninstaller online but, please, next time do the right thing in the first place.
 It fiendishly mounts two drives when you insert the device - one of which fools the operating system to appear as a read-only CD drive. Clever, but difficult to remove. Yes there are ways around getting it to run the software (although in this case even disabling autorun wasn't going to cut it) but I just wanted it gone.