>>Is it an embedded WAV file? May I ask you to email the file to me, so that I can do some checks? I hear exactly the same sound on two different computers at two different locations.
>
>I sent it. Basically, the text says "You have replies.". It may sound like Goodbye but my best guess is that another file is probably being played.

That's exactly it. For a long time ( don't know if you remember my writing to you about it), I thought that whenever I logged into the UT, a voice was saying 'goodbye'. After I turned up the volume, I realised it was 'You have replies'.