Okay heres what I'm seeing(going to be doing some talking out loud so bear with me). The first unusual happenstance is at 2/10/2006 10:28:49, where a computer with the hostname of "FAIZA$" attempts to connect. Simultaneusly the MCshield service fails. I know that its a multi-proc system so it is entirely possible. Don't know if thats related.
There seem to be a lot of invalid users trying to connect. Do you have firewall logs as well? Because then we could check to see if these users are coming from the same IP/MAC address.

Heres the list of users that are invalid:
KHIDAYAT
IHAFEEZ
MUNAZZA
IMRANYOUNUS
TEHSIN
ZIAULHAQ
KNAFEES
(note this list is by no means complete)

And those names repeat quite often.

Hmm, strange, yet another "stop error" occurred when the user FAIZA tried to connect...

This could also be a problem: "The CPUs in this multiprocessor system are not all the same revision level. To use all processors the operating system restricts itself to the features of the least capable processor in the system. Should problems occur with this system, contact the CPU manufacturer to see if this mix of processors is supported."(bold added by yours truly)


The many, many, many attempts to connect by unauthorized users worry me. If you have firewall logs and tcpdump/windump information we would be able to help you better. Of course also follow up on the processor problems. I think thats the most likely issue.