Windows-System Error

[Guest]

whenever power on the system, after the logon screen appeared, there's a
warning window pop-up, title is Windows-System Error, content is "Object Name
already exists." I've checked all the registry keys in RUN, RUNONCE, etc. and
found nothing suspectable.
Would you please give me any other suggestions?
Thanks in advance.
Win2k+SP4+latest updates+anti-Virus&firewall.

 

[Guest]

complementary:
After logon, the warning window pop-up frequently. but not once time. When
log off, the window also appeared.
Just waiting for...

 

[Guest]

http://support.microsoft.com/default.aspx?scid=kb;en-us;555121