That will certainly be useful as I have been trying unsuccessfully to replace the new AVAST! (loud and pirate talk style) Virus Database has been updated (normal volume, English). But every time I replace the .wav file with the old update message, even having disabled self-defence first, it keeps being replaced.
I have replaced it three times on my XP Pro and win7 netbook systems and the very next auto update and the original is back.
Edit: I have found out why, I replaced the one in the Sounds folder and not the one in the 1033 sub-folder. Lets see if that was the cause on the next update.