email clean messages

This is what I get when sending an email:
avast! Antivirus: Outbound message clean.

Virus Database (VPS): 0402-7, 03/01/2004
Tested on: 3/5/2004 12:30:41 PM
avast! is copyright (c) 2000-2003 ALWIL Software.

Notice the OLD VPS date.

In About for avast!, my VPS is:
Compilation date: 05.03.2004
File version: 0403-2

My log file has:
04.03.2003 14:02:44 NT AUTHORITY\SYSTEM 1972 The virus database (VPS) was automatically updated.

Why the old date in scanned email message?

I think the answer was given in my prevoius post.
http://forum.avast.com/index.php?board=2;action=display;threadid=3083

Let me know if I am wrong on this.