Thank you, thank you, thank you. It was soooo frustrating using WS_FTP and it ding'ing every time I selected a folder or file!
That was one of my motivations for fixing this. I had just upgraded to the latest version of WS_FTP which is now supported on Vista. As soon as you change the default sounds (I can't believe they still use that bizzare sound scheme of train whistles and "uhoh!"
noises) this started manifesting itself. The same with some other applications that I use.