I have an issue with one of my client site.
They have 2 DC's (2003 server). The first DC having some issues with LSASS.EXE consuming excessive CPU and the server is locking up. To bring the server, we need to unplug the n/w cable or reboot the server. It will be ok for few minutes and happening again.
So far, i have followed the steps;
1) Checked for virus, installed MS malicious removal tool but couldn't find any infection
2) Tried to install this hostfix http://support.microsoft.com/kb/939268
but it says, already running with latest SP, so couldn't install.
3) Installed this hotfix and rebooted the server http://support.microsoft.com/kb/902058
, unfortunately after the reboot, the CPU usage became 100%.
I couldn't find any errors in event logs. This is really driving me crazy.
Any advise would be much appriaciated.