Unauthorised shutdown

[dv]

While working, my system suddenly comes up with a message
telling me to shut down all programs. It then begins to
shut down these programs automatically and it says "System
shutting down, shutdown disk authorised by
NYAUTHORITY/SYSTEM"

What can be casuing this to happen?

Thanx for any advice.

DV

 

[Tim Slattery]

While working, my system suddenly comes up with a message
telling me to shut down all programs. It then begins to
shut down these programs automatically and it says "System
shutting down, shutdown disk authorised by
NYAUTHORITY/SYSTEM"

You have the Blaster worm!!

First, stop the bug from running by hitting CTRL-ALT-DELETE and
bringing up the task manager. Look for msblast.exe in the list, and
kill it. Now your computer won't shut down, but the bug is still there
and will run the next time you start your machine. Go to this URL to
find out how to get rid of it:
http://securityresponse.symantec.com/avcenter/venc/data/w32.blaster.worm.removal.tool.html