I keep getting Windows Security Alert for Avast

Saying that my definitions are not up to date. I just updated them too here is what I get:

http://img2.imagepile.net/img2b/97327untitled-1copy.jpg

Anyone know hoe to fix this?

here’s a couple of suggestions

http://forum.avast.com/index.php?topic=19568.0

http://forum.avast.com/index.php?topic=20589.0

A “search for windows security alert” (without the "s) will return many such posts. One of them should help you.

Did you check your system time and date?

Maybe these pages help:
http://forum.avast.com/index.php?topic=23457.msg193534#msg193534
http://windowsxp.mvps.org/repairwmi.htm

If they don’t, well, only overinstallation of Windows will do it. You won’t lose your programs, settings, data, files, etc.
Just choose ‘Repair’ installation of Windows and install ‘over’ the old installation.
http://support.microsoft.com/default.aspx?scid=kb;EN-US;315341
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q314058
http://www.webtree.ca/windowsxp/repair_xp.htm