LSASS Memory Leak in 2003 with Service Pack 1 and 2 installed

There is a similar post to this back in 2007, but it never got answered.

Every few days, right around 5:30 after everyone has logged out, all of a
sudden there is a spike in the non alloc memory usage and all services start
to drop out like dns, login ability, etc. At times it can clear itself up
after about 45 minutes, other times it requires a reboot for the server.

I started running System Monitor last night and right before it cut out too,
it appears that it was lsass that started to drastically climb.

I have seen several entries about lsass memory leaks but they all are from
2007 and say that the issue was fixed with service pack 1 and 2, which we
have had installed for some time.

Thoughts?

full AV scan completed here ?
Otherwise I would create a dump file and contact MS for getting further
support here.

Regards
Ramazan

"cwhicks" <cwhicks@discussions.microsoft.com> wrote in message
news:1ECBDB62-8E8C-4A1E-AC4F-EA7B3C1354CB@microsoft.com...
> There is a similar post to this back in 2007, but it never got answered.
>
> Every few days, right around 5:30 after everyone has logged out, all of a
> sudden there is a spike in the non alloc memory usage and all services
> start
> to drop out like dns, login ability, etc. At times it can clear itself up
> after about 45 minutes, other times it requires a reboot for the server.
>
> I started running System Monitor last night and right before it cut out
> too,
> it appears that it was lsass that started to drastically climb.
>
> I have seen several entries about lsass memory leaks but they all are from
> 2007 and say that the issue was fixed with service pack 1 and 2, which we
> have had installed for some time.
>
> Thoughts?