security event log in windows xp domain computers is filling up!

I have several users that had there security log in event viewer fillup on the same day (Sunday). All users are getting the same message saying the security log is full and only an administartor can login. I have already pushed out a GP to overwrite as needed. I need to know what is causing this. The only thing I can think is we just pushed out a email archive service with Dell. All of the domain computers have an outlook client that reports back to Dell's backend. I have attatched  what Im getting from the security event viewer:

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B HConnect With a Mentor Commented:
in your screenshot, you see a ton of logon/logoff and privileged use entries... which means you have enabled more detailed logging in the audit policy.  with more detail, things become more full, faster.

in the audit policy, you can control what gets logged, what doesn't, and how big the logs should be, and what happens when the logs are full.  if your logs are only allowed to be 1mb, and you have chosen to log every possible detail, and told it to block logins if the logs are full, that's a bad combination.

since the domain group policy overrides the local policy, all you have to do is fill that out how you want, and push it to the workstations.  they get it at next login, or right away if you run gpupdate /force

check you domain group policies.
Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Audit Policy
B HCommented:
after you edit the group policy, go to each workstation and have them do this:
start > run > cmd
gpupdate /force
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B HCommented:
i thought you explained it very well, even with a screenshot...  how did these answers not help?
dolphan757Author Commented:
I wanted to know what was causing the security event log to fill up. Will an audit policy tell me that?
Event 528 is logged whenever an account logs on to the local computer, except for in the event of network logons (see event 540). Event 528 is logged whether the account used for logon is a local SAM account or a domain account.

Logon types possible:

Logon Type Description
2  Interactive (logon at keyboard and screen of system) Windows 2000 records Terminal Services logon as this type rather than Type 10.
3 Network (i.e. connection to shared folder on this computer from elsewhere on network or IIS logon - Never logged by 528 on W2k and forward. See event 540)
4 Batch (i.e. scheduled task)
5 Service (Service startup)
7 Unlock (i.e. unnattended workstation with password protected screen saver)
8 NetworkCleartext (Logon with credentials sent in the clear text. Most often indicates a logon to IIS with "basic authentication") See this article for more information.
9 NewCredentials
10 RemoteInteractive (Terminal Services, Remote Desktop or Remote Assistance)
11 CachedInteractive (logon with cached domain credentials such as when logging on to a laptop when away from the network)
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