Are you using Trend Micro by any chance? This refers to the icon as well as
sound.

New email sound in Outlook Express is not functioning after installing Trend
Micro Anti-Spam (TMAS) 3.52 - Pilot:
http://esupport.trendmicro.com:80/su...&id=EN-1031616
--
Bruce Hagen
MS-MVP Outlook Express
~IB-CA~

"Frank D. Nicodem, Jr." wrote in message
...
I'm used to seeing a "new mail" icon show up in the System Tray whenever I
have unread mail waiting in Outlook Express. Recently, however, I notice
that there are times when I do have new (unread) mail in my Inbox, but the
"new mail envelope" icon does not show up in the System Tray. I'm not
talking about the icon being "hidden", and having to expand the System
Tray to see it. (I know how to handle that, through the Taskbar section
of the Start button Properties. That's not the issue.)

Does anyone have any idea if there's a setting that enables/disables this
icon, or why it might not be showing up when I do have new mail?
-----------------------------------
Frank D. Nicodem, Jr.