Win 98 cannot log on to network

I have a Windows 98 client that has been working fine.
Yesterday the client could not log on and I get event ID
680 and Logon attempt by:
MICROSOFT_AUTHENTICATION_PACKAGE_V1_0
I have installes DSclient and there is seemingly a fix
from microsoft http://support.microsoft.com/default.aspx?
scid=kb;en-us;272594&Product=w98 but I cannot find it
anywhere.

Please help.